MBBS Adtnission Test (AMU) 2004-05I. The dimensional (a) MUT-IC-I (c) M L~T-~C-I 2

, A body osccillates x 5.0 cas (2rr I displacement. sp(a)

0,

-IOn

+

(c) 2.5,+20rr, . Standing wa sc nometer wire 4 nodes. Then 3 (a) L=-A 2..,)

formula for magnetic flux is :(b) (d) MUT-~C-I M LT-~C-3

The figure below shows a pipe and gives the value rate of flow (in cmvsecj-and the direction offlow for all but one section. The volume flow rate and the direction offlow for that section is: (a) lScrn'(s, into the pipe (b) 6cm)/s. out ofthe pipe 01 (c) 8cm'/s into the pipe 13 J/s, out of the pipe (d) 13cm 3. Two wires A and B ofthe same material have their lengths in the ratio 1:3and their diameters in the ratio 3: I Ifthey are stretched by the same force, the ratio of the increase in lengths of A to B is : . (a) 1:3 (b) 1:9 (c) 1:27 (d) 1:81 4. A point object traverses half the distance with velocity II . The remaining part of the distance was covered with velocity VI for half the time and with velocity V, for the rest half. The average velocity of the object for the whole journey is :

4~Lf-;C6 In .

The only force F acting on a 2.0 kg body ast moves along thex-axis varies as shown in the figures. The velocity of the body along positiv x-axis at x= 0 is 4 m/s. The kinetic energy of the body at x = 3.0 rn is: (a) 4 J F, +4 ""I 2 (b) 8 J 4 3 (N) (c) 12 J o~ ... __ -4 ._._ _. "---'-_ (d) 16 J 9. A horizontal beam of thermal neutrons with velocity v = 2.2 x 103 meters/see is directed to hit a target I. I meter away. If gravity is the only force, the beam would miss the target approximately by: (a) 1.01 x 10-6meters (b) 1.25 x 10--6 meters (c) 1.1 x 10--6meters (d) 4.4 x 10--6 meters 10. A river 4.0 miles wide is flowing at the rate of2 miles/hr. The minimum time taken by a boat to cross the river with a speed v = 4 miles/hr (in still water) is approximately: (a) I hr and 9 minutes (b) 2 hr and 7 minutes (c) I hr and 13 minutes(d) 2 hr and 25 minutes

8.

(c)

L=-4"

I\. mass /1/ is tit and made to 111 while a the tor lowest positio (a) 2mg (Ii

For a given a velocity is do becomes: (a) Half(c) Two time

I\. stationery P with kinetic energy of the liberated is:(a) (c)

11196

11200i:

(a) 2vI (vo+v~) I (vo + 2vI + 2v~) (b) 2vo (Vo+vl) I (vo + VI + v) (c) 2vo (VI+V~) / (VI

An clcvator

+ v~ + 2v) (d) 2v~ (VO+"I) I (VI + 2V2 + vo)

5.

A monochromatic light wave of wave length A. enters a medius of refractive index 11= Z. Which of the following statements-is true: (a) speed and frequency are halved and wave length does not change. (b) .speed and wave length are halved and fre quency does nor change. (c) frequency is halved while wave length and speed do not change (d) wave length, speed and frequency are all halved 6. Number of images formed when -two plane mirrors are placed inclined at an angle 30 arc:(a) II (0) 12 (c) 13 (d) 15

II. A small mass m is slipping over a frictionless incline (as shown in the figures) made of wood of mass M. The acceleration a by which the incline should be pushed so that the block m remains stationary is :(a)

ft/sec: \\ hell I 1100r of the Ii taken (in see floor is (take(a)

--1'2

.K ..f3

(b)

-g

2

..f3

I\. projectile

with an initia(mass ulcart h. the chana(a)

(c)

(d)

(iM (iM

lIlil lIlil

12.

planet goes round the SUIl three times as fasl as the earth. If rand,. are the radi i of orbit of I' c the planet and the earth respectively then:1\3

(h)

(c )

(i;-"ll11i1 1111

\,I) (iM(j is

7.

A ray oflight is incident on a surface separating two media at Brewster angle 0 = 300. The refractive index ofthe Il I - . second medium with respect to t ie first IS: (a) 1.1 (b) 1.4 (e) 1.7 (d) 2.0

(a) rc (c) rcI

=9r

p

(b)r

re =3r

the IIlli\\I

p

= 27 r '

(d)

r1e

=_

I

the radiusp

r'

3

( tvmnS-122

)

U)2.0 kg body as it s as shown in the dy along positive etieenergy of the

A body osccillates with SHM according to the equation x 5.0 cos (2n I + n ). At time I =1.5 second, its displacement. speed and acceleration is (a) 0, -IOn + 20n~ (b) 5,0, - 20 n2 (c) 2.5, + 20n, O' (d) -5.0,+ 5 n, -IOn2 Standing waves are formed in a vibrating sonometer wire oflength Land 3 Antinodes and 4 nodes. Then(a)

20. Two particles of masses 111 and M (M>m) are connected by a cord that passes over a massless, frictionless pulley. The tension T in the string and the acceleration a of the particles is : 2mM Mm (a) T = (M-m) g; a = (M + ml

L

=

2A

3

(b)

L=

TA

4

(b) T

=. ~~:)

g; CMM::)ga= I ,

4

5 x (m)

al neutrons with see is directed to ravity is the on Iy iss the target .25 x 10-6 meters .4 x 10-6 metersng at the rate of 2

ken by a boat to 4 miles/hr (in sti II rand7 minutes rand25 minutes

3 (c) L=--/I. (d) L=4A . 4 A mass 11/ is tied to an end of a string of length L and made to move in a vertical circle just loosing wh iIe a the top. The tension in tlie string at the lowest position is: (a) 2mg (b) mg (c) 4mg (d)' 5mg For a givcn angle to the projectile if the initial velocity is doubled the range of the projectile becomes: (a) lIal r (b) One forth (c) Two times (d) Four times A stationery Ph~(X'nucleus emits an alpha-particle with kinetic energy Tu The fraction of recoil energy of the daughter nucleus to the total energy liberated is : (a ) II I96 (h) 4/196 (e) 11200 (d) \/50 An elevator is accelerating upward at a rate of 6 Ii/sec: "hell a bolt from its cei Iing falls to the 1100rof the lift (Distance =9.5 feet). The time takcn (in seconds) by the falling bolt to hit the floor is (take g = 32 n/sec-) :(a) ..J2

M-m ) (c) T= ( (M+m) g;a= . Mm )

(2mM) (M+m) (2mM)(M

"

g

'/.,.:-::,.

(d) T

= ( (M+m)g;

a

=

+ m)

g

21. We are given the following atomic masses 238U = 238 . 05079 u 234Th = 234 . 04363 u 4He=

4.00260 u

The energy released during the alpha decay of 238U is : (a) 4.00 MeV (c) 3.75 MeV (b) (d) 4.25 MeV 5.03 MeVI~

22. Fraction of tritium left after \ 50 years (half life of tritium is 12.5 years) i(a)

1/1024

(c) 1/4096 23. If the magnetic field of a light wave 0 s parallel to j-axis and is given by By = 8m sin (kz -(J) t) the direction of wave travel and the axis along which the electric vector oscillates is: (a) +ve y-axis, z-axis (b) +ve z-axis, x-axis (c) -ve x-axis, y-axis (d) -ve x-axis, z-axis 24. Fission of one nucleus of nUm releases 250 MeV of energy. The number offissions / second required to produce I MW power is :(a)

(b)(d)

1/..J2 1/2..J2

g

projectile of mass /1/ is thrown vertically up with an initial velocity \' from the surface of earth (mass o f earth = M) If it comes to rest at a height II. the change in its potential encrgy is :to.(a) (jM /1111 R (R 111)

9,2

x

1017

(b)

6.3

x

1023

ce times as fast radii of orbit of vely then:=

Ih)Il)

(j

!'vl

III

lie

I

I{ (R

f 11)2

(c)1.6xI019

(d)

2,5xI0(('ut ,

(j\I/11I1R/(RIII)

\ 0,

(c) .1S')>I Vc (c) V, = V? Vh = Vii (d) V"=V,, > V" > Vc Figure shows five charged lumps of plstic and an electrically neutral coin. The crosssection of the Gallssion surface S is indicated 'II = 6,2511C, lf~ = -9.55 nC, lfJ = 6.95nC, {/~= -1.55 nC and 'Is = 2.35 nC. The net electric flux 4> through the surface 12 is: (r; = S.SS x 10- C2 / N -m2) (a) +17711\-mX (b)-885N-m2/C (c) + 5()(I \-/lI1/C (d) -1000 N-m2/C ;\ plano convex lens of focal length 6.0 is co ns t r u c t e d from a material of rcf'ractivc index 11 =1.5 with respect to air. The radius of curvature of the curved surface is : (a) 6.()cm (h) 3.()cm (c) 9.0cm (d) 4.5cm '\I

+b-q

c

,

55.

hr. A boatman, can row the boat at a speed Of 4 km/hr in still water, goes a distance of2 km upstream and then comes back. The time taken by his to complete him journey is : (a) 60 minutes (b) 70 minutes (c) 80 minutes (d) 90 minutes 59. The ratio of the radii of mars to that of earth around sun is 1.524. The ,approximate time taken by mars to complete one revolution around sun is: (a) 1.5 years (b) 1.9 years (c) 3.2 years (d) 1.1 years 60. The displacement of a particle undergoing SHM of time period T is given by x(t) = x cos (wt + 4. The particle is at ~-x"' at timet= O. Is the particle at x = + X m when (a) t = 0.25 T ", (b) t=0.50 T (c) t=0.75 T (d) 1.00 T 61. A circular disc rotating with frequency -", = 1.3 rev/sec. comes to a stop in 30 seconds. The approximate angular acceleration is : (a) + 0.27 rad/sec' (b) -0.27 rad/sec' (c) +0.54 rad/sec' (d) -0.54 rad/sec' . 62. A buUet of mass m is fired from a gun of mass M. The recoiling gun compresses a spring of force constant k by a distance d. Then the velocity of the bullet is: tI . r.-(a) ktl -VM/m (b) M vkrn tI

66.

How man U2J6 exp finally int (a) 12.6 An electr particle ha corresponcl would have (a) A > A r~ )1 (c) A > Iea r

67.

A2e12 nucld alpha parti(J required to alpha parti ' (a) 3.405 M

(c) 8.133 M In a nuclea decuteron an The other lib (a) proton (b)e 69. When a syste to a state / II shown in the W = 20 cal an ; h f Q= 36 c: path; h f'! (ii) return path/;, (iii) Take K . 68."".1

56.

A uniform solid sphere R produces a uniform gravitational acceleration iI ~on its surface. At . what two distances from thc centre ofthc sphere is the gravitational acceleration iI/3: (a) 3RandRd.f (c) (b)..JfRandR/3-)

63.

(c) -vkM . (~1-' Vd m m A satellite of mass m revolves in a circular orbit of radius R around a planet of mass M. Its tatal energy E is : (a) -

trz:

kM-

g

.hii '"Vulll

Elj(a) +6.-43,+40 (c) +13,+30,-2~ The fiture shOll from the corner tank filled with observer O. Th the liquid with I

mGMm

GMm

(b)

+ +

GMm3R

..jJ I{ and 'V-:.J3--) ) --)

GMmR 70.

~--)

(d) 3RandR/3 64.

(c) - ~

(d)

57,

A force F = 2 ; - 3 k acts on a particle

~

at r = 11.5j - 2 k. The torque t acting (In the particle relative to a point with co-nrdinatcs (2.11 m, 0, - 3.0m) is: ',.~

(a) (-3.11; - .t.5 j - k ) N-m-~-)

~

~

~N-m

Assume that a tunnel is dug through earth from North pole to South pole and that the earth is a non-roaring, uniform sphere of density p. The gravitational formce on a particle of mass m dropped into the tunnel when it reaches a distance r from the centre of earth is : (a) (

o~

(h) (3;

+6j

+k)

(c) (-2.11; (d) (-1.5 5S.

~-)

+ .t.Oj + k) N - m~ ~

~

~

!7t'GP)r

(b)

(347tnlGP)r(a) 1

rJ_In

; - Ul j - k ) N -m

(d) ( 347tniGP)r

T3

(b) 2

A river 2km wide is flowing at the rate of2 km/ IMBBS-J481

tata speed Of4 ltance of 2 km [fhe timetaken is: minutes I minutes us to that of 1.524. The by mars to ound sun is: ears ears a particle period T is t + $). The et= O. Is the 0.50 T ~O T h frequency stop in 30 .te angular 27 rad/sec' rad/sec' . gunofmassM. spring offorce thevelocity of

65. How many alpha- land p--decays does U2J6 experiences before turning finally into stable Pb206 isotope? (a) 12.6 (b) 10.4 (c) 8.6 (d) 8.8 66. An electron, proton and an alpha particle have same kin~tic energy. The corresponding de-Broglie wavelength would have the following relationship: (a) Ar, > Apap A > (b) A >A ra >A (c) A > A > A (d) Aa >A r >A r a r I' 67. A2CI2 nucleus is to he divided into 3 alpha particles. The amount of energy required to achieve this (mass of an alpha particle = 4.00388 u) is : (a) 3.405 MeV (b) 10.837 Mev (c) 8.133 Mev (d) 12.573 Mev 68. In a nuclear reaction between a decuteron and 6C12. 7NIJ is produced. The other liberated particle is a : . (a) proton (b) electron (c) neutron (d)position 69. When a system is taken from a state i to a state f along the path i a f (as shown in the figure), Q = 50 cal and W = 20 cal and W = 20 cat. Along path i h f Q= 36 cat. (i) What is W along path i h f '! (ii) If W = - 13 cal. for the return pathfi, what is Q for this path? (iii) Take Einl.i = lOcal, What is Einl} ?

71. The figure shows a rectangular loop of wire paced in a non-uniform varying magnetic field B = 4rr, perpendicular to the loop and directed into the page. B is in tesla, I is time in seconds and x is in meters. The loop has width w = 3.0 meters and height 5.0 m The magnitude of the induced emf at t = 0.2 seconds isy B

,

'i' ~ .,x....

olves in a undaplanet E is: m

ug through South pole on-roahng, ity p. The particle of unnel when the centre ltmGP)rIt,

nrGP ) r

(a) 14 V (b) 36 V (c) 72 V (d) 24 V 72. A coil has inductance of 50 mH and resistance=0.5Q. If this coil is connected to a 15 V battery, the energy stored in the coil after the current has built upto its maximum value is : (a) 50.0J (b)22.5J (c) 35.5J (d) 20.5J 73. The number of ('harge carrier concentration is silicon at 300 k is 1.56 x 1016/mJ. If the electron and hole mobilities are respectively 0.135 and 0.065 (SI units) the resistivety of the material is (in SI units) approximately: (a) 2500 (b) 2000 (c) 3600 (d) 1350 74. A proton oflinear momentum 2.40 x 10-19SI ( units)movesintoa magneticfieldB = 1.5webers/ .b~1 m' perpendicular to itsdirectionof motion.The radiusofthecircularpath followed theportonis by (a) 1.0 meters (b) 2.4 meters (c) 1.9 meters (d) 1.5 meters. Vulume 75. Magnetic field changes from + 2.0 to (a) +6.-43.+40 (b) +20,+40,-20 - 2.0 (SI units) through a circular coil (c) +13,+30.-20 (d) + 15,-50,+30 of wire having 100 turns. The cross 70. The fiture shows a light raystarting sectional area of the coil is 0.001 from the comer E of the bottom of a meter- and its total resistance is 100 tank filled with a liquid reaching an ohms. The total charge moved observer O. The refractive index of the liquid with respect to air is : through the coil is : (a) 2 x 10-2 C (b) 12xlO-2 c .' (c ) 4 X 10-2 C (d) 6 x 10-2 C 76. Two chargesof .uagnitude q and Q-q placed at a distance d from each other. --lm __ E The force between them would be maximum if: I (b) 2 (c) -.J3 (d) ~ (a) q = QJ3 (a) (b) q = -Q/2d "V 3 (c) q = 2Q (d)q=Q/2 IMBBS-149J

I&J

iL-lb

"grm

TI

The approximate number of electmns "'()win~ in a n ire carr)'ing 5 amp current in -l minutes is : I) 1.6 x W"} (b) 5.0 x 10'9 (c) 6.03 X W"} (d) 7.5 x 10'9 7N. The emfs and resistances in the circuit (as sbown in the fi~ur. :J h Jibe

77.

84. The number

protons is :'.J ;~ ~ t

of protons faWing on earth's surface per unit area per unit time is 1500. If the radius of the earth is 6.4xl06 meters, the current coming to earth due to these cosmic ray

91. And, travel cathod

.

length electricdircctiop/'( ('II

= 4.-1 Y, r, = 2.3 0,E,

cf' n rn:..

= 2.1 V I': = 1.80, R =E:

hu.

(b.J

/

p

(c) O.6.J2 ami)

(d) 6A amp

is 1(1'

10r,i

lr! It

U79. Nil.

E,

:'

5.9 0

85 .. A cooper wire of length I and radiu r is to be used as fuse. If the fuse wire attains, then the heat lost H per unit surface area per second is : 1 (a) H a. (b) H a. r2

.-J

(c) H a. i

(d)H

a..-J

SI.

S2.

S3.

The current i in the circuit is : (a) 200 m A (b) ISO mA (c) 2311 mA (d) -1110mA A falling oil dr-op of radius R=I.Ox1~ mete I', dc n s ity p = 900 kg/mJ in Millikan's oil drop experiment is halanced bv an electric field of str'ength 0.98 x 10~ N/C. The number of excess electrons in the oil drop is approximately equal to : (a) 2 (b)S (c)IO (d)8 Flectr'ic field inside a copper wire of kngth 10 meters resistance 2 ohms. connected to a 10 void battery is (in SI units) : (a) I (b) 0.5 (c) 10 (d) 5 A point l'harJ.!e + Q is at a distance d/2 dircctlv a huvc the centre of a square of side d. :nll' magnitude of the electrostatic Ilu x throllJ.!h the square is: (a) Q {F/6r: " (0) Q d/6r: " (c) Q /6r: " (d) 6 Q/r: " Total ellcrJ.!~' stored in a t)OOJlF capacitor' at 1110volts is transferred to a 100 JlF Capacitor. the potential drop across till' new capacitor is (in volts) : (a) 900 (0) 200 (c) 100 (d) 300 A wi r e placed on the x-axis has a c u r r e n t I = -lA in the positive directions of .v-axis. A non uniform ~ ~ magnctlc field B= 3x i+ 2x) (SI units) act on I/H,' wire. The net force F on the section of wire from x = 0 to x = 2.0 meters is : (a) 2~ \ along ,i"a\i~ (c) 211,\ alollgx-axis

86. Time required

87.

88.

to boil 2 liters of water initiality at 20uC by a heater coil which works at 80% efficiency spending 500 Joules is : (a) 82 minutes (b) 50 minutes (c) 28 minutes (d) 37 minutes A 50 kg man laying on a surface of negligible friction pushes a 500 g stone away from him,.giving it a speed of 10 m/s. The velocity acquired by the man is : (a) 1.0 rn/s (b) 5.0 m/s (c) 0.1 rn/s (d) 0.01 m/s Two charges of magnitude +'1 and 3q are placed 100 ern apart. The distance from +'1 between the charges where the elecrrostic potential is zero is : (d) 80 em

tile elect/ of the c1ec (a) 8.00 c (c) 0.080 92. A ball of centre ofa that has a charge on surface of (a) +50e, (c) - 50e, 93. The elcctr substance ' mass of th current I for (US se (a) I A 94. A ideal isuthcrrna volume ch pressure fr on the gas I

n

(a) W = +

I

(b) W=-II

(a) 25 ern (b) 50 ern (c)75cm 89.

(c)W=1I1

of a liquid each having a charge +'1 are combined to from a larger drop. The new electrostatic potential Vu is related to the potential V on each small drop by the cuqtion: (a) Vu (c)

N small

drops

(d) W 95.

=-11

= Vu =

VNJ VNJI2

(b) Vu=VN2/J (d) VII

=

VN 96.

90.

Assuming on excess electron per unit area on earth's surface, the electrostatic potential on earth's surface is (Radius of earth = 6.4 x JOb meters) : (a) 1.600 (c) -O.1J5 (0)

(h) 16 \ along z-axis(d)J()

x along z-axis/MBBS-ISO/

2.640 +0.640

(d)

The total po water cont, approximat (a) 1.0 x 10 (b) 6.03 x I (c) 1.80 x I (d) 1.20 x 1 A 500 watt bu perfectly black approximate fo the sphere as it by the bulb is ( (a) 1.3 m (c) 6.3xlO 7

tons failling on nit area per unit dius of the earth e current coming ese cosmic ray b)0.123 amp d) 6.4 amp th I and radius r . If the fuse wire t lost H per unit nd is : b) H a

r

d) H a r'

2 liters of water heater coil which cy spending 500b) 50 minutes d)37 minutes on a surface of pushes a 500 g givingit a speed ity acquired by

b) 5.0 m/s )0.01 m/s itude +q and 3q rt. The distance charges where ial is zero is : )75cm(d) 80 cm uid each having ined to from a w electrostatic to the potential by the euqtion: )V =VN2/JII

91. An e lec t r o n beam with electrons travelling at v = 109 ern/see in a cathode ray tube enters an area of length 4 ern along the beam with an electric field perpendicular to its direction of motion. The acceleration of the electrons along the electric field is 1017 em/see'. The displacement of the electron beam along the direction of the electric field is : (a) 8.00 cm(b)0.80 cm (c) 0.080 cm (d) 0.008 cm 92. A ball of charge + 50 e lies at the centre of a hollow spherical metal shell that has a net charge of -150 e. The charge on the inner surface and outer su .ace of the spherical shell is: (a) +SOe, -200e (b)-50e, '-lOOe (c) - SOe, -150e (d) -50e, -lOOe equivalent of a 93. The electro-chemical substance is numerically equal to the mass of the substance deposited if a current 1 flows through the electrolyte for 0.25 seconds. The value of I is : (a) ] A (b) 2A (c) JA (d) 4A gas is subjected to an 94, A ideal isothermal expansion such that its _volume changes from Vi to VI ans pressure Irorn Pi to PI' The work done on the gas is :(a) W =

97.

An electron of mass m and charge -e is rotating around- a proton os charge +e with a radius R, If T is the time period of rotation, then : (a) T aR2 (b) P aRJ(c) P aR 2 (d) TaR

98.

is the angle of the incline when a block of mas~ m just starts slipping down. The distance cover-ed by the block if thrown up the incline with an initial speed is :VII

(a) (c)

VI~

I 4g Sin ~

(b) 4v/ g Sin (d) 4JoSin /g

,..f,

v(~

Sin

-99. The figure shows three parriclcs (big cireles) of same mass and same constant speed moving as indicated by the vectors. Point (I, b, c, d from a square with e at the centre. Rank the point according to the magnitude of the net angular momentum of the three particle system, greatest first:a

d

c

!~l

+

11

RT 10~.LI

V

(b) W (c) W(d) W

= - 11

V RT log L

v_

I

(a) LA = Lu > L(" > L" > Le > 0 (b) LA > Ln > t., = Le> L" > 0 (c) LA > = Lc> Le> L" > 0

r.,

= 11

P RT 10g:1

rI

= - 11

) VII

= VN

lectron per unit surface, the ial on earth's arth = 6.4 x 106 2.640 +().640

P 95. _The total positive charge in a glass of water containing -180gm of water is approximately: (a) 1.0 x UP coulomb (b) 6.03 x 107 coulomb (c) 1.80 x 107 coulomb (d) 1.20 x 107 coulomb 96, A 500 watt bulb is placed at the centre of a perfectlyblack sphere of radius R = I meter.The approximate force experienced by the walls of the sphere as it absorbs as the photons emitted by the bulb is (take 47t = 12.6) : (a) Rhizophora (a) 1.3 xI0--7N (b)2.5xl0-7N (c) Rosc (c) 6.3xl0-7N (d)3.14xl0-7 N [MBB~;-1511

RT log -'.!.

P

(d) Lc> L" > L" = L" > 0 100. An object undergoing SHM takes 0.5s to travel from one point of zero velocity to the next such point. The distance between those points is SO ern. Thc period, frcq ueney and amplitude of the motion is : (a) Is, I Hz,25cm '(b) 2s, 1 Hz,50cm - (c) Is,2Hz,25cm (d)2s21Iz,50cm 101. The cells of the aleurone layer arc : (a) haploid (b) diploid ~riploid (d) jetraploid 102. A dicot plant that lacks the cotvledons in its seed's -is----: ' ~uscuta (d) Sunflower

~4.

V~

115. Pollination by bat is called: (a) Ormithophily (b) Entomophily (c) Malcophily (d) Chiroptcriphily 116. The main edible part in apple is : (a) Thalamus (b) Endocarp (c) Mesocarp (d) Epicarp 117. The world's tallest flowering tree : (a) Sequoia (b) Pinus (c) Cedrus (d) Eucalyptus 118. Primary cell wall consists of a loose net work of cellulose microfibrils impregnaged with a matrix of: (a) Glycoprotein and flavoprotien (b) Hemicellulose and flavoprotein (c) Hemicellulose and pection , (d) Flavouprotein and pectin 119. Lenghemoglobin present in the root nodules of symbiotic biological nitrogen fixing plants is used as : (a) Cofactor of nitrogenase (b) Oxygen scavenger (c) Nitrogen reducing agent (d) Energy supplier 120. Insectivorus plants can grow well in a soil which is deficient in : (a) Nitrates (b) Iron (c) Magnesium (d) Sulphur 121. Golgi bodies help in : (a) cell wall formation (b) transport of enzymes (c) stroge, condensation and packing of materials ~ (d) all of'Yhe above 122. In germi.ltating seeds of cereals like barkely the hormone which stimulates the formation of a-amylase, responsible for Saccharomyces cerevisiae the hydrolysis of streach is : (b) Sclerospora graminicola (a) Cytokinin (b) Gibberellin (c) Sclerotina fuiticola (c) Abscisic acid (d) Ethylene (d) Collectrotrich um falcatum 123. The region of the spectrum least ) 12. The wood of Pinus is absorbed by the chlorophyll ranges (a) Pycnoxylic (b) Polyxylic between: (c) ~noxylic (a) 300-400 nm (b) 400- 500 nm J!lYl>ycnoxylic and monoxylic (c) 500-600 nm (d) 600-700 nm 113. Mangroves, the plants growing in soil 124. How many mitotic divisions must occur in a with low oxygen contents are cell of root tip to from 128 cells: characterised by (a) 128 (b) 127 (c) 64 (d) 32 (a) Tap roots (b) Pneumatophores 125. The enzyme involved in both (c) Stilt roots (d) Haustorial roots glycolysis and Pentose Phosphate 114. The deciduous forests of oak: Pathway is: (a) almost cease vegetative growth (a) Enolase (b) Epimerase before winter (c) Hexokinase (d) Pyruvicacidkioase (b) almost cease vegetative growth 126. The restriction enzyme ECO RJ has during winter the proerty of : (c) almost cease vegetative growth (a) endonuclease activity before summer (b) exonuclease activity (d) almost cease vegetative growth during (c) legation activity summer (d) correcting the topology of replicating DNA [ME:BS-1521

is used as biofertiliser mostly for the cultivation of: / ~ (a) Barley (b) Wheat (~ljce (d) Maize Epidermis is produ~~ \~ (a) ., 1 I Z~lIogen (c) Procarnbium (d) Noneofthese 105. Fruit ripening can be accelarated by (a) reducing the supply of water whcn fruits arc maturing. (b) increasing su~~I~ of .oxygen (c j ~ng up the sLUToundiOgsartificially ~upplying ethylene gas to the fruits. 106. The association of an organism with another organism where both the organism are neither benifited nor harrped is called : Uar'Commensatism (b) Symbiosis (c) Parasitism (d) Predation 107. The following is not a true subcellular orga..nalle (a+-Isysosome ~ Peroxisome (c) Ribosome (d) Chloroplast 108. 'Petiole-crack' is cause~b deficiency of: (a) Potassium (Boron (c) Molybdenum ) Iron 109. When pollen from the flower are deposited on the stigma of another flower-such type of pollination is known~~ (a) Autogamy \kif) Geitonogamy (c) Herkogamy (d) Homogamy 110. A phosphodiester linkage is present in : (a) ATP (b)ADP. (c) Cyclic AMP ,Jd) Noneoftheabove. Ill. Fun s which is widely used in bre mg industry is :

103.Azo/la

127. Transe place i (a) u (c) Ril 128.DNAlig (a) spli (b) joi (c) den (d) sy~ 129. Allele I (a) alte (b) tota (c) tota a h~ (d) tota a ch 130. Most abu (a) Leghl

(c) Rub131. Yeasts an valuable (a) Vital (b) Ferti (d) one 132. Formatie is an exa: (a) Oxidl (b) Cycli (c) on-e (d) Subst 133. The self (a) Coeni (c) Apoz 134. Substance p, have inhihit arc termed (a) Antibi (c) Xenob 135. LargcrDNA pairs are cion (a) A. phas (c) Epison 136. The essenfiah in foods den (a) Phenyls (c) Arginin 137. Two groups 0 working out th leaders of the (a) e. Vent (b) S..I. Nic (c) F.e. Cri (d) K. Beadl

phily iphily is : irp p :ree : s a loose ifibr ils tien 'otein1

he root logical as :

veil in arr

packing ials like dates the sible for in me m least ranges100 nm )0 nm

iccur in a(d) 32

both osphaten

erase idkinase RJ has

lingDNA

127. Transcription in case cucaryotes takes 138. About 70 percent ofthe acid in acid rain is: place in : (a) Hydrochloricacid (b) itric acid (a) Nucleus (b) Cytoplasm (c) Sulphuric acid (d) Chromic acid (c) Ribosome (d) Nucleolus 139. If a river is receiving a regular supply 128. D A ligaseis an enzymethat catalysesthe: of sewage rich in organic matter at a (a) splitingofDNA threads into small bits certain point the BOD of the area will: (b) joining of the fragments of DNA (a) remain unchanged (c) denaturation of DNA (b) slightly decrease (c) enormously increase (d) synthesis of DNA (d) enormously decrease 129. Allele is the 140. Which of the following was absent from the (a) alternate traits of a gene pair atmosphere of primitive earth: (b) total number of genes for a trait (a) CH4 (b) NH3 (c) total number of chromosomes of (c) H20 (d) None of the above a haploid set 141. The technique widely used for the (d) total number of genes present on removal of salts from salt water: a chromosome (a) .Osmosis (b) Plasmolysis 130. Most abundant plant protein on the earth is: (c) Reverse osmosis (d) Alltheabove (a) Leghemoglobin(b) Lecithin 142. A heterophic plant could be : (c) Rubisco (d) Soybean prolein seed (a) Symbiont (b) Saprophytic 13I.Yeasts and some filamentous fungi are (c) Insectivorous (d) Allthe above valuable sources of : 143. Photosynthesis occurs with minimum (a) Vitamins of B-complex loss of water is : (b) Fertilizers (c) Some salts (a) C3 plants (b) CAM plants (d) None of the above (c) C~ plants (d) Noneofthe above 132. Formation ofGTP during Kreb's cycle 144. Plant cells can be converted to is an example of : protoplasts by treating them with : (a) Oxidative phosphorylation (a) Cellulase (b) Cyclic photophosphorylation (b) Cellulase + pectinase (c) Non-cyclic photophosphorylation (c) Cellulase + pectinase + lipase (d) Substrate level phosphorylation (d) Cellulase+ pectinase+ lipase+ protease 133. The self splicing introns are called: 145. The process of formation of ammonia from (a) Coenzymes (b) Ribozymes atmopheric nitrogen and hydrogen is : (c) Apozymes (d) Holoezymes (a) ammonification (b) nitrogen fixation 134. Substance produced by microorganisms that (c) nitrification (d) dentrification have inhibitory effectson other microoganism 146. Vernalization is a method of inducing are termed: early flowering in plants. This involves (a) Antibiotics (b) Antibodies exposure of the seeds to : (e) Xenobiotics (d) Interferons (a) Low temperature (b) Certainhemicals c 135. La rger DN A fragmentshavingupto 45,000base (c) High pH (d) Light pairs are clonedby the vector: 147. PlantsproducedATPfromADP+ Pi by: (a) A. phase (b) Cosmid (c) Episome (d) Fplasmid (a) Photosynthetic phosphory latious 136. The essentialaminoacid that isusuallydeficient (b) Oxidative phosphorylation in foodsderived from plant sources : (c) Substrate level phosphorylations . (a) Phenylalanine (b) Leucine (d) All the above (c) Arginine (d) Lysine 148. Mutations generally occur in : 137. Two groups of scientists were responsible for (a) Dominantgenes (b) Recessive genes working out the human genomesequence.The (c) Lethal genes (d) Mendel's genes leadersof the two groups were': (a) e. Venter and F. Collins 149. Segregationof genestake placeduring: (b) S.I, Nicolson and B. Singer (a) Metaphase (b) Anaphase (c) F.e. Crick and J.D. Watson (c) Prophase (d) Embryoformation (d) K. Beadle and S. Tatam (MBBS-153)

f7

.

,l

..~~

,f

,I ..l

ISO. An anti-codon is the sequence of the nitmgenous bases on : (a) the complementary strand of DNA, which codes for one amino acid (b) the complimentarystrand of rnRNA, which codes for one amino acid (c) t-RNA molecules where the amino acid is attached (d) a r-R A molecule, which recognises the aporopriate sequence of bases on the m-RNA. 15J. Who stated that species are groups of inte rbreeding population that are eprod uctively isolated f rom other such groups: (a) Ross (b) Merrel (c) Mayr (d) Hamilton 152. Which ofthe following factors help in evolution hut is not considered the basic factor: (a) Isolation (b) Adaptation (c) Variation (d) Mutation 153.The first modern birds appeared during the (a) Cretaceous period (b) Jurassic period (c) Triassic period (d) Carboniferousperiod 154.Negative feedback loop: (a) keeps our body temperature within a normal range (b) maintains the homoeostasis (c) is involved in both the above functions (d) has no role in anyoftheabovefunctions. ] 55. Which of the following processes affect the Hardy-Weinberg Equilibrium to cause variation at the genetic level: (a) Mutation and Recombination' (b) Gene migration and Genetic drift (c) latural Selection (d) All the above 156.which one of the following is a pseudocelomate animal ; (a) Taenia (b) Fasciola (c) Ascaris (d) Planaria 157. Which of the following types of ceUs lose the mitotic activity after differentation, in multicelluar organisms: (a) Liver cells (b) Muscle cells'1

158. Which of the following cytoskeletal components of an eukaryolytic cell playa major role in protoplasmic streaming: (a) microtubules (b) Microfilaments (c) Intermediate filaments (d) None of the above 159. Which one of the following types of bands is used both in plant as well as animal karyotyping ? (a) C band (b) G band (c) R band (d) N band 160.Prostaglandins have no role in : (a) inflammatory and allergic reactions (b) blood clotting (c) smooth muscle contraction (d) conduction of nerve impulses 161. Simple cubiodal epithelium 'lines all the following structures except the: (a) ovary (b) pancreatic ducts (c) thyroid follicles (d) fallopian tube 162. Tissue Plasminogen Activator is used for: (a) stimulationsofwoundhealing (b) dissolving the blood clots after heart attacks (c) enhancing the action of immune system (d) stimulating the formation of erythrocytes 163.A gene containing multiple axons and at leaset one intron is termed as : (a) split gene (b) operator gene (c) syntenic gene (d) epistatic gene 164. Tay-sach's disease, an inborn error of metabolism, is related to the deficiency of: (a) glucocerebrosidase (b) phenylalanine hydroxylase (c) hexoseaminodase (d) none of the above 165. Which ofthe foilowingvitamins is referred to as pellagraPreventingFactor: (a) Thiamine (b) Folic acid (c) iacine (d) Cobalamine 166. Which of the following human disease is related to a genetic block : (a) .Alkaptonuria (b) Phenylketonuria (c) Galactosaemia (d) All the above 167. Low thyroid level in our body result in: (a) weight gain (b) loss of appetite (c) lethargy and depression (d) all the above 168. Which of the following is a D A containing double-shelled virus: (a) Hepatitis B (b) Hepatitis A

169. Which oft the sleep-wI (a) Mela (c) Adre 170. Ilaemogl influence] (a) partia (b) partia (c) tempe (d) all the 171. The onlv which is' n the placen immunity (a) IgM 172. Malaria in (a) the b anoph (b) vertic placen (c) blood t (d) all the 173. The most tcst for III (a) JJI>III>IV (c) III>II>I>IV 47. TIle compounds that 1. C~CHO 3. (CH))CCHO (a) I and 2 (c) 1,2 and 3

a

~O~

/'f"0

'A: is(b) CH3C~CN (d) a\CH2NC

(d) graphite anodes[MBBS7158]

(c) C~C~CH2CN

Isomer of: pentnol butanol :rsion of2~a 11 ide will be: (d) ~H s is achiral?

KOHf .

-;II>III>IV (b) II>I>III>IV (c) 11l>II> I> IV (d) IV> III> II> I 47. TIle compounds that will undergo Canizzaro are: 1. C~CHO 2. HCHO 3. (CH3)JCCHO 4. PhCHO (a) I and 2 (b) I and 3 (c) 1,2 and 3 (d) 2,3 and 4 III

MH

o

o

A

/.

~.~

F

54. An object is thrown vertically' down on earth with speed v. The change in its speed after falling through a distance d is: (a) mgd (b).Jiid (c) 2..Jiid (d) 2...Jmgki

[MBBS-159]

55. A constant force F is acting on body mass m moving velocity 1 shown in the figure. The as power P exerted is: (a) F cosflv(b) F cos81mg (c) F mg cose/v (d) mg sin81F 56. A 2 g ball of glass is from the edge of a bemisplerical cup whose radius is 20 cm. How much work is done on the ball by the gravitational force the ball's motion to the botton of the cup? (a) l.96 mJ (bp.92 mJ (c) 4.90 mJ (d) 5.88 mJ 57. A 150g tennis ball coming at a speed of 40m/s is hit straight back by a bat to speed of 60 m/s. The magnitude of the average force F on the ball, when it is ill contact for 5 ms, is: (a) 2500 N (b) 3000 N (c) 3500 N (d) 4000 N 58. TI1e figure shows a horizontal block of mass M suspended by two wires A and B. The centre of mass of the block is closer to B than A. (i) Is the magnitude of the torque due to wire A is greater, less or equal to that due to B? (ii) Which wire A or B exerts force on the block? (a) (b) (c) (d) (i) (i) (i) (i) greater (ii) B equal (ii) B less (ii) A greater (ii) A

~

61. A block of mass 650g is fastened to a spring whose spring constant k = 65 N/m. The block is pulled a distance of 10 em from its equilib rium position at x = 0 and then released from rest at t = O. Calculate (i) the angular frequency o, (ii) maximum acceleration a and (iii) phase angle $ of the simple harmonic motion (a) rn (b) m (c) ro=

66. Twom confin that its-

= = (d) ro = 7.5 rad/s, a = 5.0m/s2, $ = 3.14 rad

10 rad/s, a= 10m/s2, $ = 0 rad 6.5 rad/s, a = 15m/s2, $ = 3.14 rad 13.0 rad/s, a = 6.5m/s2, $ = l.57 rad

approq (R = 8.. (a) +25 (c) -25( 67. The fiThis pan point, a that all ~

62. The figure shows three situation of displacement x(t) ofa pair of two SHM (A and B) that are identical except for the ~hase difference. For. each pair, find the phase shift (in degrees) needed to shift the curve for A to coincide with curve for B:

l. Isth 2. Ist

plae two (a) nega

(b) positl(c) negati2

(a) +lS()

0

. [MBBS-160]

to a spring . The block m its equilib leased from angular freration a and onicmotion Orad = 3.14 rad

66. Two moles of a mono atomic ideal gas is in a confined in a container and is heated such that its temperature increases by lOoC. The approximate change in its internal energy is (R = 8.31 J/mole - K): .

(a) +250 Joules (c) -250 Joules

(b) +350 Joules (d) +450 Joules

70. The figure shows a family of parallel equipotential surfaces and four paths along which an electron is made to move from one surface to another as shown. (1) What is the direction of the electric field? (2) Rank the paths according to work done, greatest first. 1 I--.J. 1 1 1 1 1 1 1

. (a) Rightward'.

,

4 > 3 > 2 > 1

:I

$ = 1.57 rad3.14 rad displacement d B) that are fference. For (in degrees) to coincide=

G7. The figure two changed particles on x-axis. This particles are free to move. However, at one point, a third charged particle can be placed such that all three particles would be in equilibrium. 1. Is the third particlepositively ornegatively charged? Is the point where the thired particle is placed to the left, right or between the two charged? (a) negative, to their right (b) positive, between them - 3q - q (c) negative.to their left (d) positive, to their right GR. Tile figure shows an electron e travels through a small hole in plate A towards plate B. A uniform electic field between the plates slows the electron without deflecting it. (i) What is the direction of the electric field? (ii) Three other charges + qp + q2' - q3 travel similarly through small holes as indicated by arrows. Does the kinetic energy of these change increase, decrease or remain same. 2.

(b) Leftward;

1> 2 > 3 > 4

d 3:

1

t-""11

:2 :I I 1 ,

HI I 1 1 1

(c) Rightward; 3 = 4 > 2 = 1 (d) Leftward; 1 > 2 > 3 = 4

!

1

)

+

! l i ~P!'1

:::

:

:

,,il:1.

e-

71. A 1O-volt battery is connect to three capacitory; C, = 21lF, C2 ,; 31lF and C3 = 51lF, as shown. The charges on the capacitors Cp C2 and C3 respectively are:

(a) 211 3 > 1 > 2 (c) 1 > 2> 3 > 4 (b) 4> 2 > I > 3 (d) 3 > 1 > 2 > 4

g6

O,6.Eint = W = 0, Lilli,t = Q Q=W 0, 6.Eint > 0

:::;:: (~: ,,g :::~:::::v~'(d) (1) negative (2)n(;:gative3 1 2

74. An electron is traveling with velocity +5 m/s in a magentic feild = +4 What is the magnitude and direction ~ force F acting on the electron.

r

B 61 t Tesla.of the

V = 31

(a) 18e N along +ve z-axis (b) 18e N along -ve z-axis (c) 36e N along -ve z-axis (d) 54e N along +ve z-axis

[MBBS-161]

75. A simple ohm meter is made by cmnecting a l.5V battery-in. series with a resistance R and an ammeter that reads from 'O-LOmA, as shown below. The resistance R is adjusted so that-when the leads A and B are shortened together the meter reads 1 mA. What external resistance across A, B results in (I) lOo/~(2) 50% (3) 90% ofthe,

79. Printing of a photograph from a negative requires exposure of 2.5 seconds from a lamp 0.5m away and power I .How much exposure time is required from a ~amp of power 210placed at a distance of 1m? (a) 2.5 s

K5. What is the ra of the Balmer! of the Lyman!

(a) 4:1

(b)

(b) 10 s(c)

5 s

(d) 15 s

KG.What is the de-l with a kinetic ( (Given: h=6.63 and e=Ltixlfr: (a) 725pm(b). K7. What is the en ~2P-+~2S? (Given: atomic 31.97207 u fan

full scale deflection?.~.

~

80. What is the radius of curvature of a double convex lens made of glass of refractive index 1.55 Ifits focal length is 20 em: (a) 22 em (b) 25 em (c) 30 em (d) 32 em 81. If we decrease the frequency of the applied A C. with a purely capacitive load, do (1) the amplitude of V and (2) amplitude of Ie increase, decrease e . or remam th e same: (a) (1) increase '(2) same (b) (1) same (2) increase (c) (1) same (2) decrease (d) (1) decrease (2) same 82. A ray of light is incident on a thick slab of glass (thickness t) as shown below. Theemergent ray is parallel to the incident ray but displaced sideways by a distance d. If'the angles are small then dis: (a) t (1 '- ilr)

(a) (1) 17,500.0

(2) 9500.0 (2) 7500.0 (2) '1300.0

(3) 365.0 (3) 1500.0 ' (3) 65.0

(b) (1) 150000(c) (1) 13,500.0 (d) (1) 11,500.0

(2) 1500.0 (3) 167.0

(a) -1.2 MeV . (c) +2.1 MeVKK.At what rate m reaction to rener Assume the Q-

76. The figure given below shows a circular coil C with 250 turns, area A =.2.5xl0-4 m2 and a. I

current i = 1001-1A. The coil is at rest in a uniform magnetic field = 1.0T, with its magnetic moment it initially aligened with B. How much would an external torque do on the coil to rotate it by 900 from its initial orientation?

B

(a) I 02~

(b) }

K9. The intensity a optical fibre deo

(a) 1OI-1J (b) 2.51-1J (c) 51-1J

o--r

(b) r t (1 - ilr) (c) it (1 -+)1

1=11The intensity of initial value afte (a) log(l/a) (c) (log 5)/a 90. Identify the Ion logic circuit:

(d) 151-1J

It'(d) t (1 1

. 77. The. figure shows the cross- section of a long . conducting cylinder of inner radius a and outer radius b. The cylinder carries a current whose current density J = cr2. What is the magnitude of 'the magnetic feild B at a pint r. where a -< r < b? (a)' . B = 1-10nC - a2) (r2 4r2 B=I-1C('-':tt)0

+)

83. An object moving with speed Vo towards a spherical mirror with radius of curvature R. along the central axis of the mirror. The speed of the image with respect to the mirror is (U is the distance of the object from mirror at any given time t):

(a) NAND (b) AND (c) NOR

(d

(b)

(a)

+

4r2 B = 1-1 (r nC

(u _ ~R)

v~ Yo

R (b) - (2U,... R) (d)

r

VO

91. Which of the fol displacement x(1) with constant a (a) x = 6 -7r2(1l

(c) . .

0

2 -

a

2)

(d) _--,=-0

B = 1-1 (,-4 - tt) C

_

(0) -

tv _~R)'

~(2U~

(c) x~v~

= 9(2

+8

4r'

4r

n. Two

solid sphericals planets of equal radii R having masses 4M and 9M are separated by a distance 6R. A projectile of mass m is sent .from the planet of mass 4M towards' the heavier planet. What is the distance r of the point from the lighter planet where the gravitational force on the projectile (a) I.4R (b) 1.8R is zero? (c) 1.5R (d) 2.3R

84. In a photoelectric experiment the graph of frequency u of incident light (in H2) and stopping potential Vein .volts) is shown below. From figure the value of the planck's constant is (e is the elementary charge): (a) e ~~ (b)e~v

92. The dimensional (a) MUr-1 (b

(c) US-I93. The radius of a s by electron scat likely mass numl

(a) 27ab(Volts

(b) 40

!G_____ J

t

;

"

C

b

(c) e ~~

(d)e~

94. What is the wavt photon emittedin Ii atom spectrum? (a) 150nm(b) 12

ab

[MBBS-162] "

liverequires lamp 0.5m po sure time tIoplaced at

85. What is the ratio of the shortest wavelength of the Balmer series to the shortest wavelength of the Lyman series? (a) 4:1 (b) 4:3 (c) 4~9 (d) 5:9 86. What is the de-Broglic wavelength of an electron with a kinetic energy of 120 eV? (Given: h=6.63xlO-34 J-s, m. = 9.11xlO-31 kg and e=l.6x10-19 Coulombs) (a) 725pm(b) ~OOpm (c) 322pm (d) 122pm in the p~decay of 87. What is the energy released ~2P-+)2S?

95. If the wavelength of a particular colour oflight is 600nm in air. (1) What is its frequency? (2) What is it wavela1g1hin glass of refrative index 1.5? (ay 15 X 1014Hz, 300 nm (b) 6 X 1014Hz, 400 nm (c) 5 X 1014Hz, 400 nm (d) 3 X 1014Hz, 500nm 96.

(d) 15 sofa double active index

An incident ray of light is incident perpendicularto the face ab of a prism (refractive index 1.5)as shown below. Find the largest value of the angle ~ so that the incident light is totally reflected back at the face ac of the prism:

...I

(d) 32 em~ppliedAC. Ibe amplitude 1Stl, decrease

(Given: atomic masses: 3l.97391u for 32p and 3l. 97207 u for 32S) (a) -l.2 MeV

(a)

00,'0)

(b)

OO"tn~~

e (2) increase ease(2) sameick slab of eemergent ut displaced I es are small

(b) +l.7MeV(d) -0.9 MeV

. (c) +2.1 MeV

(O)Oo,+t)

(d)CO"~)

&&. At what" rate must the 23SU nuclei undergo fission reaction to renerate energy at the rate of 3.0 W Assume the Q-value of fission to be 200 MeV: (a) 102) (b) 1019 (c) 1011 (d) 106 &9. The intensity of light pulse travelling in an optical fibre decreases acording to the relation:

97. There are two co-axial circular coils. The larger coil has radius RI with NI turns and the ' smaller coil has radius R, withl'[, turns of wires. The two coils are placed in the sme plane. What is their mutual inductance:7t~oNIN;; ~o7tNIN2Ri

I = Ie-axo

The intensity of light is reduced to 20% of its initial value after a distance x equal to: (a) 10g(1Iex.) (b) log ex. (c) (log 5)/ex. towards a mrvature R. r. The speed irror is (U mirror at (d) log (5/ex.) of the following 90. Identify the long operation logic circuit:

(a)

2~7tJ..L0N2IN22~

(b)

2RI7t~0N2IN21~

(c)

2~

(d)

~

...

I I

(a) NAND(b) AND

(c) NOR

(d) OR

98. The figure shows three circuits with identical batteries, inductors and resistances. Rank the circuits according to the time for the current to reach 30% of its equalibrium value after the switch is closed:

~r R)

91. Which of the following relations representing displacement x(t) of a particla describes motion with constant acceleration:Vo

(a) x

=

6 -7r2(b)

x

= 3(2 + 5/3 + 7

(c)x=9/2+8 ~v~ e graph of

(d)x=4r2+3r1

o[]o. 1 3 2(a) 1>3>2 (b) 3>1>2 (c) 3>2>1 (d) 1>2>3 99. An ion of change + q and mass m is accelerated in a region of potential difference V volts and then it enters a region of uniform magetic field perpendocular to its velocity. If the ion describes a semicircle of diameter x then its mass m is:

and stoppingelow. From tant is (e is

92. The dimensional formula for torque is : (a) MUr-1 (b) ML-IS-I (c) US-l (d) M2S-2J(-1 93. The radius of a spherical nucleus as measured by electron scattering is 3.6 fm. What is the likely mass number of the nucleus? (a) 27 (b) 40 (c) 56 (d) 120 94. What is the wavelength of the least energetic photon emitted in the Lyman series of the hydrogen atom spectrum? (a) 150nm(b) 122nin (c) 102nm (d) 82nm

B

B 2x2(a)m=W

_____i Jc

b

(c) m= B~x . g

[MBBS-163]

HXl. Five resistance, each of 5 0 are connected as shown in figure. Find the equivalent resistance between points (1) A and B, (2) A and C. (a) (1) 7.50 (2) 2.250 5 n (b) (1) 50 (2) 2.500 A B (c) (1) 2.50 (2) 3.130 (d) (1) 30 (2) 2.50 C 101. hich is the most abundantgas in the trachosphere? W (a) Oxygen \...{tS)NitrogeIi (c) Carbon 'dioxide (d) Argon' 102The chorion arises from: (a) inner cell mass (b) endoinet}"ium rophoblast (d) embryonic disc . 10 .Spindle fibres of a mitotic cell are made up of: (a) action (b) myosi~ tubulin (d) fibrin 104. hich of the following cartilages is 'present in W intervertebral disc? (a) Hyaline (b) Elastic (c) Fibrous (d) Calcified 105. hich of the following animals is triploblastic W acoelomate? (a) Ascaris (b) Fasciolas (c) Planaria (d) Terebella lOG. The products of action of chymotrypsin on proteins are: (a) small peptides (c) oligopeptides (b) large peptides (d) amino acids

112Sea fish are good source of: (a) Iron (b) Iodine (c) Potassium (d)Al the above 113. nipolar neurons are found only in: U (a) early embryos (b) olfactory epithelium (c) retina of the eye (d) spinal cord H4.Whichofthefollowiugtypesofcellarefound in retina? (a) Neuroglialcell (b) Schwann cell (c) Amacrine cell (d) Purkinje cell 115. ree redicals in our body have been implicated in: F (a) ageing (b) certain degenerative disorders (c) neurodegeneration (d) all the above 116. hich of the followinganimals are isoeonformers? W (a) Hogfishes(b) Sharks (c) Rays (d) Allthe above 117.In the presence of vasopressin, the greates fraction of filtered water is absorbed in: (a) loop of Henle (b) proximal convoluted tubule (c) distal convoluted tubule (d) collecting tubule 118. hich of th following minerals reduces the W excitability of nerves and muscles? (a) Potassium (b) Sodium (c) Magnesium (d) Manganese 119. nteric fever is caused by: E (a) Salmonella enteritidis (b) S. typhi (c) S. typhimurium (d) None of the above UO.Which of the following vitamins is a coenzyme for amino acid and fatty acid metabolism? (a) Vit. s, (b)Vit. Bl2 (c) Vit. Bl (d) Vit.B2 Ul. Which of the following is a prolaction-inhibiting hormone secreted in the hypothalamus? . (a) Serotonin (b) Dopamine (c) Epinephrine (d) Histamine 122. he inhibition of succinic dehydrogenase by T malonate is an example of: (a) competitive inhibition (b) non-competitive inhibition (c) allosteric modulation (d) non of the above 123. seudo-stratified epithelium covers the inner P linnings of: (a) bronchioles (b) trachea (c) lung alveoli (d) none of the above U4.Buoyancy in a bony fish is maintained with the help of: (a) streamlined body (b) paired fillS (c) swim bladder (d) all the above

107. hich of the followinmg hormones has a W stimulating effect on entire immune system? (a) Thymosin (b) Cortisol (c) Adrenaline (d) Insulin 108. he condition in which the body muscles become T stiff, due to non-availability of ATP,enzymes and oxygen, is referred as: (a) muscle fatigue (b) rigor mortis (c) muscle twitch (d) tetany )(y:.).Whichof the following recombinant DNA products is used for the treatment of pathogenic viral infections? (a) lnterleukins (b) Interferon (c) Erythropoietin (d) Plasminogen Activator 110. assive immunization is indicated in: P (a) diphtheria (b) tyhoid (c) tuberculosis (d) none of the above '111. Which of the following is not an annelid? (a) Leech (b) Earthworm (c) Sea mouse (d) Sea cucumber

125.Smooth mu (a) viscera (c) blood V6 12G.Adiagra of a species (a) idiogra (c) karyogra 127. hich is no W (a) They are (b) They lac! (c) Theirgen (d) They con 128. n which of ~ I have pentam larvae arebil~ (a) Arthropoo (c) Echinode 129. he random ~ T occurring by (a) geneticva (c) gene migra 130. hronic expos C (a) blue-baby (c) foot and (b) dropsy 131. hich of thefi W the Hardy-We variations at the (a) Natural sel (b) Mutation a (c) Gene migra (d) All the abov 132The system 0 evolutionary an organisms, ig: similarties or difi (a) cladistics (b) phcnetics (c) classical sys (d) new system 133.Frogs lack: (a) incisors . (c) molars 134.Blood worms are (a) Hirudinaria (c) Limulus

[MBBS-164]

125. mooth muscles S

Occur on: (b) internal organs (d) all the above , 135.Carcinomas arise from: cells origin (a) haematopoietic (c) melanocytes

)AI the abovem:

(a) viscera (c) blood vessels

"2:/"--7. c: L-.~

ry epitheliumcord 11 found are cell ie cell implicatedin: e disorders hove , nformers? Mtheabove the greates ed in: lutedtubule ling tubule reduces the

126. diagrammatic respresentation A of karyotype of a species is referred to as its: (a) idiogram (b) hologram (c) karyogram (d) monogram 127. hich is not true for prokaryotic cells? W (a) They are far smaller than eukaryotic cells (b) They lack membrane-bound organelles (c) Their genetic material is localised within nucleoid (d) They contain a well developed cytoskeleton 128. n which of the following animals the adults I have pentamerous radial symmetry while their larvae are bilaterally symmetrical? (a) Arthropods (c) Echinoderms (b) Molluscs (d) Annelids

(b) tissues of mesodermal

(d) epithelial tissues

136.Which of the following immunglobulins is a mediator in allergic response? (a) IgM (b) IgA (c) IgE (d) IgD 137.The largest of the white blood cells are the : (a) neutrophils (b) eosinophils ,

"> }. .I

~

I'.

:.

(c) monocytes (d) lymphocytes I ' 138.Tissue transplant between identical twins is called: (a) autograft (c) allograft (b) xenograft (d) isograft 139.The human egg at the time of ovulation surrounded by: (a) cumulus cells (c) interstitial cells (b) granulosa cells (d) none of the afove 140.SARS was first reported from: (a) Indonesia (c) Vietnam (b) Singapure (d) C~' 141.Which of the following zones of a lake is habitat ,for snails, slugs and micro-organisms? (a) Littoral (c) Limentic (b) Benthic (d) Profundal 142 Stem cells arise from: (a) bone marrow (b) foetal liver (c) yolk sac isv'

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129. he random changes in the allele frequency T occurring by chance is termed as: (a) genetic variability (b) genetic drift (c) gene migration (d) mutation 130. hronic exposure to arsenic causes: C (a) blue-baby syndrome (c) foot and mouth disease (b) dropsy 131. hich of the following W the Hardy- Weinberg variations at the genetic (a) Naturalselection (c) Gene migration (d) All the above (d) itai-itai disease basic processes affect equilibrium causing' level?

?ese

(d) all the above

coenzyme olism?

143.1ngestion of food and water contaminated wi 1 infective eggs is the primary route of infection for.

d) Vit.B2-inhibiting us?

(b) Mutation and recombination, and gentic drift

(a) Taenia solium (c) Wuchererial bancrofti (b) TricMnella sp (d) Ascaris lumbricoides144.Which of the following is nonsense codon? (a) UAG (c) UAA (b) UGA (d) all the above 145.The degree of pathogenicity of a mocro-or-ganism is referred to as: (a) virulence (b) prevalence

genase by

132 The system of classification based on evolutionary and genetic reationships among organisms, ignoring the morphological similarties or differences, is called: (a) cladistics (b) phenetics (c) classical systematics (d) new systematics 33.Frogs lack: (a) incisors, (b) premolars

(c) severity (d) pathogenic efficacy 146.Which of the following sets of genotype will not react with antigens A, Band H? (a) IAIAIHH (b) IAIA/Hh (c) IAjfHh (d)IAIA/hh 147.Which of the following is a psychooomatic disorder? (a) Psychosis (c) Hypochondria 148.Magnetic resonance (b) Neurosis (d) Schizophrenia imaging can detect:

theabove the inner

e above ed with

(c) molars . (d) none of the above ~.Blood worms are the larvae of: (a) Hirudinaria (c) limulus

ve

(b) Chironomus (d) Daphnia[MBBS-165)

(a) lesions of multiple sclerosis on brain (b) brains tern tumour (c) slippe disc in spinal column (d) all the above

149. he following hepatitis viruses are RNA except: 160: itromonas oxidize ammonia to nitrite whether T N (a) hepatitis B virus (b) hepatitis A virus or not light is present and use the energy released (c) hepatitis G virus (d) hepatitis E virus . for synthesizing carbohydrates from CO 2" 150. hich of the following is not an autosomal W Such organisms are referred to as: genetic disorder? (a) Chemosynthetic autotrophs (a) Sickle-cell anaemia (b) Cystic fibrosis (b) Chemosynthetic heterotrophs (c) Haemophilia (d) Huntington's disease (c) Photosynthetic autotrophs 15l.The first living organisms that appeared on the (d) Chemosynthetic heterotrophs planet earth, according to the most accepted 161.1nsectiveorousplants depend on the insects they View, were: consume for providing: (a) anaerobic (b) aerobic (a) carbohydrates (b) fats (c) photosythetic (d) none of the above (c) minerals (d) nitrogenous compounds 152If there were present no subcellular organelles 162A Latin American plant of the genus Acacia in a eucaryotic cell, the rate of metabolism will: has modified leaves which act as thorns that (a) increase (b) decrease provide shelter to stinging ants. In return the (c) not change (d) increase dramatically ants protect the plants from herbivores, by at 153. he best test for determining the parity of the T tacking them. This is a typical example of: isolated subcellular organelles is: (a) parasitism (b) mutualism (a) phase contrast microscopy (c) symbiosis (d) commensalism (b) marker enzyme levels 163. hen one gram of each of the following is oxidised W (c) ulta-centrifugation using density gradient completely, maximum energy is released in (d) electorn microscopy case of: '154.Saprotrophs live on dead organic matter, which (a) starch (b) coconut oil ,.' they utilize: (c) protein -, (d) ATP (a) by phagocytosis 164. n banana the edible part is: I (b) after digestion by extracellular enzymes synthesized by them (a) rudimentary endocarp and fleshy mesocarp (c) by endocytosis (d) by pinocytosis 155. ungal cell walls are characteristic in having: F (a) cellulose (b) hemicellulose (c) chitin (d) pectin 156. hich of the following has synandrous condition: W (a) Colocasia(b) Hibiscus (c) Mimosa (d) Ricinus 157. enicillium is described as belonging to a group P called 'imperfect fungi' because it: (a) reproduces only asexually (b) cannot reproduce asexually (c) does not produce perfectly spherical spores (d) producsantibiotics 158.Following is not true of monocots: (a) Most of the food of the seed is stored in endosperm (b) Have parallel veins in theirleaves (c) Flower parts occur in fours (d) Flower parts occur in threes 159.lf a cell contains 36 chromosomes, what will be the number of chromosomes in each of the 4 daughter cells resulting from meosis? (a) 36 (b) 18 (c) 9 (d)none of the above (b) flerhy epicarp (c) rudimentary mesocarp and fleshy endocarp (d) pericarp 165.Actinomycetes belong to: . (a) Kingdom Protista (b) Kingdom Fungi (c) Progenote (d) Kingdom Monera 166.Sweet potato is a modified: (a) Stem(b)Adventitiousroot (c) Tap root (d) Leaf 167. ivipary exhibited by the red mangrove helps V the plant in germination of its seed by preventing their exposure to: (a) high temperature (b) high. salinity (c) drought .(d) soilalkalinity 168. uring the cell cycle, RNA and proteins are D synthesized during: (a) GI phase (b) G2' phase (c) S, phase (d) Interphase 169. aryotype preparation can be obtained by: K (a) Fluorescence in situ hybridization (FISH) (b) Binding technique (c) Flow cytometry (d) All the above

170. alking Fern is: W (a) Pteris vtttata (c )IAdiantum caud 171. he xerophytic 11 T storing it in: (a) Intercellular SJl (b) Normal pareno (c) Intercellularsp~ (d) Parenchymatod purpose 172Which of thefolloW (a) Coal (c) Ethanol 173. io-assays are us~ B the concentration/ hormones, vitamiru of living organis ' (a) animals linkfa (b) mocro-organis (c) plants 174. erveral plants tha S seed dispersal, ac ripe fruits. This sug purpose is: (a) sucrose (b) lac 175. ivision in yeast 0 D division of cellul:u. (a) Binary fission (c) Replication ]76.The following is n of plant cells: (a) Phospholipids (c) Cholesterol 117. he classical eXaII T organisma includes (a) addition of 02 t (b) removal of eleo (c) removal of hyd (d) all of the above 17K The angiosperms a earth today becaus (a) evolutionof flo (b) double fertilizaf (c) enclosure of OVi (d) all the above 1'lJ. 'Whip-tail' diseasei deficiency of: (a) manganese (c) molybdenum

[MBBS-166)

nitritewhether energy released s from CO2, as: s ,hs theinsectsthey

us compounds genusAcacia as thorns that . In return the rbivores, by at exampleof: lism ensalism ,wingsoxidised i is released in nut oil

eshymesocarp fleshyendocarp

Taproot(d) Leaf angrovehelps bypreventing .salinity alkalinity d proteins are

the above'

180."Apomixis" in plants mean, developmentof a plant: . (a) from stem cutting (b) from root cutting (c) without gamtc fusion (c)IAdiantum caudatum (d) Lycopodium spp. , (d) by fusion of ametes 171.The. xerophytic plants conserve water by , 181.Heart wood is: stonng It in: (a) Intercellular spaces (a) Outer part of secondary xylem (b J Normal parenchymatous cells (b) Outer part of secondary phloem (c) Inner part of secondary xylem (c) Intercellular spaces and parencymatous cell~ (d) Inner part of secondary phloem (d) Parenchymatous cells specialised for this purpose 182 Typic~l floral formula of Ranunculaceae is: 172.Which of the following is the renewable resource: (a) Ef>9K5C~OC9K(sF(6)~IQ 173.Bio-assays are used for the determination of + the concentration/activity of subtances link (c) ED9K(5) (6)A(""S~S.8) C hor':ll?nes, vitamins, etc. based on the growth + (d) ED9~+2C4A4+2q2) of living organisms used for the purpose are: I (a) animals link rats/mice 183.Thick roots hanging down from Banyan tree are: ) (b) mocro-organisms (a) stilt roots . (b) pneumatophores (c) plants (d) all the above (c) prop roots (d) buttress roots 174.Serveral plants that depend upon animals for 184.DNA is not presentin thefollowingplant organelles: s~ed dl~pers~l, accumulate sugar(s) in their (a) Mitochondria (b) Chloroplasts npe frUit:'. TIus sugar most widely used for the I purpose IS: (c) Lysosomes (d) All the' above (a) sucrose (b) lactose (c) fructose (d) trehalose 185. The technique applied to locate protein product . of a cloned gene subsequent to electrophresis . 175.Division in yeast, characterized by an unequal is described as: diVISIOn cellular material, is known as: of (a) Southern blotting (b) Western blotting (a) Binaryfission (b) Budding (c) Northern blotting (d) Eastern blotting (c) Replication (d) Division 186.Lederberg and Lederberg demonstrates that . 176.The following is not present in the members mutationsare preadaptive.They used the following of plant cells: technique for the purpose: (a) Phospholipids (b) Glycolipids . (a) Replica plating (b) Gene sequencing (c) Cholesterol (d) None of the above (c) Transduction (d) Transformation 177.The classical example of oxidation in living 187.The follwing. nucleotide is not produced by organisma includes: hydrolysis of either RNA or DNA: (a) addition of 02 to the substrate (a) dUMP (b) d GMP (c) d eMP (d) dTMP (b) removal of electons from the substrate 188.A dipeptide contains: (c) removal of hydrogen from the substrate (a) two amino acids . (b) two peptide bonds (d) all of the above (c) two amino groups but no carboxyl group 17KThe angiosperms are the dominant plants on (d) two carboxyl groups but no amino group earth today because of . (a) evolution of flowers for sexual reproducation 189.Photorespiration occurs to a minimal extent in C4 piants because the Rubisco of plants: (b) double fertilization (a) cannot react with oxygen (c) enclosure of ovule within the fruit (b) does not come in contact with oxygen (d) all the above (c) has very low affinity for oxygen 179. 'Whip-tail' disease in cauliflower is noted due to (d) is inactivated on exposure to oxygen deficiency of: 190.Chlorophyll b is absent in: (a) manganese .(b) magnesium (a) spinach (b) brown algae (c) molybdenum (d) nitrogen (c) green algae (d) none of the above (b) Dryopteris ftlix-mas.[MBBS-167]

170.Walking Fern is: (a) Pteris vittata

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,

191. he following occur(s) during non-cyclic but T not cyclic photophosphorylation: (a) Reduction ofNADJ>+(b) Release of oxygen (c) Splitting ofHP (d) All the above '192The enzyme "Rubisco" is responsible for CO2 reduction and is located in the: (a) Outer membrane of the chloroplast (b) Inner membrane of te chloroplast (c) Stroma of the chloroplast (d) Interthylakoid space of the chloroplast 193.Heme-containing cytochromes, involved in photosyntheses, are a rich source of: (a) Calcium (,b) Iron (c) Zine (d) Copper 194. itochondrial DNA codes for: M (a) All the proteins of mitochondria (b) Only few proteins of mitochondria (c) Most of the .proteins of mitochondria (d) None of the proteins of mitochondria 195. iruses that contain RNA as the genetic material V take the help of a.nenzyme to produce DNA which in turn helps in the sythesis of virus specific proteinsv The enzyme is: (a) DNA dependent RNA polymerase (b) RNA dependent DNA polymerase (c) DNA dependent DNA polymerase

(d) RNA dependent RNA polymerase 196.Synthesis of RNA using DNA as the template is describe as: (a) replication (b) transcription (c) translation (d) transformation ; 197. egetarians run the risk of developing the V deficiency of the following vitamin: (a) C (b) BI2 (c) A (d) B6 198. genetically modified plant may contain a gene A from: (a) another plant (b)a bacterium (c) an animal (d) all the above 199. ajor biomes of the world are: M (a) Tundra, Taiga, Savannah, grassland and desert (b) Tropical rain forest (c) Temperate deciduous forest (d) All the above 200.Air pollutant responsible for damages in cereals, fruits and cotton crop and also causing immature yellowing and shedding of leaves is: (a) Ozone (b) Fluoride (0) Oxides of nitrogen (d) S024.

MBBS P1. A vernier cellipe has 20 divisions scale divisions a (a) 0.2 mm (c) 1.0 mm The velocity-time The displacemen

2.

r ~~elfl

(a) Area A + Are] (b)' Area A + Are (c) Area A + Are (d) Area A + Are' 3. A ball is projecte If the height attair (a) H(c)

4f1

f ANSWERS 2007-2008 I

o I(a)13(c) 25(b) 37(b) 49(c) 61(a) 73(b) X5(c)

02(a) 14(a) 26(a) 38(b) 50(c) 62(a) 74(b) 86(d)

03(c) 15(b) 27(a) 39(c) 51(b) 63(a) 75(e) 87(a) 99(b) 111(d)

04(b) 16(d) 28(a) 40(a) 52(b) 64(e) 76(b) 88(e)

05(c) 17(a) 29(c) 41(b) 53(d) 65(d) 89(e)

06(b) 18(a) 30(c) 42(b) 54(b) 66(d) 90(b) 114(c) 126(a)

07(d) 19(a) 31(c) 43(a)

08(d) 20(b) 32(c) 44(c)

09(c) 21(b) 33(c) 45(d) 57(b) 69(a) 81(e) 93 (b)

I Q(d) 22(a) 34(d) 46(a) 58(b) 70(c) 82(e) 94(e)

11(b) 23(c) 35(c) 47(d) 59(c). 71(c) 83(b) 95(c) 119(b)

12(c) 24 (d) 36(b) 48(e) 60(b) 72 (a) 84(a) 96(d)

Three masses MJ frictionless table. massless threads as by a constant force thread between 1111

1

56(b) 55(a) 67(b) . 68(c) '79(c) 91(e) 115(d) 127(d) 80(a) 92(*)

77(b) . 78(d)

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M +M22

+

97(b) . 98(b) I09(b) [IO(a) 121(b) 122(a) 133(a) 134(a) 145(a) 157(a) J69(d) 181(d) 193(b)

100(c) 101(b) 112(b) 113(a)

102(c), !03(cLJ04(c) 128(c)

105(c) 106(b) 129(b) 130(b)

107(a) '108(b) 120(a)5.

(c)

lMJ + M2 +'

(

MJ+M1

116(d) 117(c) . Il8(c)

123(b) 124(c) 125(d) 135(d) 136(c) 137(c) 148(d) 160(a) 172(c) 184(c) 196(b)

131(d) 132(a)

146(e) 147(c) 158(c) 159(b) 170(c) 171(d) 182(a) 183(c) 194(b) 195(b)

138(d) 139(c) 140(d) 141(c) 142(d) 143(d) 144(d) 149(a) 150(c) 151(a) 152(b) 153(c) 154(b) 155(c) 156(a) 161(d) . 162(b) 163(b) 164(a) 165(d) 166(b) 167(b) 168(a) 173(d) 174(c) 175(a) 176(c) 177(d) 178(d) 179(e) 180(c) 185(b) 186(a) 187(d) 188(a) 189(b) 190(b) 191(d) 192(c) 197(b) 198(d) 199(d) 200(c)[MBBS-168]

Two blocks of mas are connected by a s over a frictionless below. The coefficie m J and the horizon system is released, accelerating. What placed over nil so t with a uniform spe

se: template tion nation oping the I. A vernier cellipers (with least count has 20 divisions of the vernier scale. scale divisions (a) 0.2 mm gene 2. (c) 1.0 rrim are of

MBBS Admission Test' (A.M.U.) 2008-09 Physics, Chemistry & Biolo y=0.1 mm) The main

/';7

d) B6 itain alUm

(b) 0.5 mm (d) 2.0 mmgraph of an objects during the interval is as shown. (a)(c)

The velocity-time The displacementv

0 to

14. is

12 kg10 kg

(b)

II kg

love

(d) 2 kg of mass m is moving in a horizontal

6.

A particle

d and desert + Area

's

ciricle of radius R under a centripetal force equal A to --Z(A = constant). The total energy of ther

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ag immature s:

+ Area C + Area D + Area (b)' Area A + Area C - Area B - Area D (c) Area A + Area B + Area C + Area D (d) Area A + Area C + Area E - Area B + Area D(a) Area AB

particleA

is

(a)

RA

(b)(d) energy

A

RA

3.

A ball is projected If the height(a) (c)

to attain the maximum is H, the range (b) 2H (d) H/2 is

range.

(c)

2R

2R is increased by

attained

7.

If the kinetic

of a body

H 41-1masses

4.

Three massless thread

M"

1112 and M3 are lying on aare connected by 8.

300%, the momentum (a) 300% (c) 100%

of the body is increased (b) 200% (d)

byI

I&{J

50%contract to half its

frictionless

table. The masses

If the earth were to suddently present duration (a) (c) size, without of the new

) i)

12(c) 36(b) 48(c) 60(b) 72 (a)

threads as shown. The mass M3 is pulled force Fas shown. The tension in the massesMl

any change day will be (b) (d)

in its mass, the

by a constant

,) 24(d)

between

M2. and M3 is.It;

18 hours 6 hours

30 hours

12 hoursstool with his arms his arms. (L) ?

9.( MI+M2 1 (a) lMI+M2+M:)F(b) ( MI + M, 1 lMI+M2+-M,)F(d)mI

A boy is spinning

on a rotating

84(a) .) 96(d) a) 108(b) ) 120(a)5.(c)

(M,+M, lMI+-M2+-M)F

1 16 kgI

down to his side. Suddenly Which of the following (a) co decreases speed (co) and the angular (b) both wand (c) ru remains (d) ui increases

he stretches momentum same

is.true regarding his angular

( . MI - M2 lMI+M2+M)F=4 kg. andnl2

but L remains

L decreaseconstant but L decreases butL remains constant

Two blocks of masses are connected over a frictionlessnil

=

d) 132(a)d) 144(d) (c) b) (c) (d) 156(a) 168(a) 180(c) 192(c)

by a string-of negligible mass passing pulley as shown surface the masses in the figure of friction be.tween the block is 0.4_ When the

10.

The' angular speed of earth in rad/s, so that bodies on equator may appear weightless is : [Use g = 10 m/s2 and the radi us of earth = 6.4 x \03 km]

below. The coefficient and the horizontal is released, system

ml and ml startmass m should(ml

1.25 x 10-3 (c) . 1.25 x 10-1II.

(a)

(b) 1.56 x 10-3 (d) 1.56of the radius

accelerating.

What additional

be A body weights W newton at the surface earth. Its weight at a height equal to halfthe of the earth will be

placed over ml so that the masses with a uniform speed?

+

m) slide

(MBBS - 169)

(a) (c) 2.

W

2 4W9'

(b) (d)

2W 3W

(a) 1 : I (c) 4 : l

(b) 2 : I (d) 1 :' 4

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4

If the temperature of it black bO"I'" --. CHJ

Br~Br

yBr OH OBr

(c)

30.35

(d) 90.05does not react with Fehling (b) acetaldehyde (d) glucose increasing XeF2 order of lone pair

CH3

71.

Which of the following solution? (a) formic (c) acid

(b)

~ ~CH3 Oll

+ Br2 water-+

(01

QOH

QCH B'2.

benzophenone

72.

Which is the correct of electrons (a) (b) IF7

on the central IFs < CIF3Y(c)

speech

(d)

hearing

174. The trophoblast cells of the blastocyst give rise to : . (a) . chorion (b) am-non allantois ~YOlk sac 175. In the ascending limb of the loop of Henle the maximum osmotic difference that can be created by the Na-K pump is approximately: (a) 100 m Osmol/1 (b) 200 m Osmol/} JjI{ 3.00 m Osmol/I (d) 400 m OsmoJII 176. In the Mesozoic era the correct sequence of the periods, beginning with the earliest, will be : (a) triassic, jurassic, cretace69s (b) jurassic, cretaceous, triassic .5Y cretaceous, triassic, jurassic (d) cretaceous, jurassic, triassic

e, affects

)

e becausery

167. In recombinant DNA technology the term ~ refers to: (a) ~ enzyme that cuts DNA into fragments 177: !7joi~t~ be.t~een~e ~ the stic]; end oJ a DNA fragmene-' gliding joints= (c) a RFLP marker (c), saddle joints (d) a plasmid that transfers DNA into a living cell

~!

Gar al ~one~ are: (b) hinge Joints (d) pivot"{;'ints

(MBBS - 179)