‘s Pioneer’s · PDF fileThe question paper contains 90 objective multiple ... Each...

‘s

Pioneer’s

Aspire Scholarship Exam

11th (Medical) Examination Centre: Pioneer Education, Sector – 40-D

General Instructions:-

The question paper contains 90 objective multiple choice questions.

There are three Sections in the question paper consisting of Section – A BIOLOGY (1 to 30),

Section – B PHYSICS (31 to 60) and Section – C CHEMISTRY (61 to 90).

Each right answer carries 4 marks and wrong –1mark

The maximum marks are 360.

Maximum Time is 3Hrs.

Give your response in the Answer Sheet provided with the Question Paper.

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Section – A {Biology}

1. A sudden increase in CO2 concentration around a leaf will cause:

(a) Wider opening of stomata (b) Increase in transpiration

(c) Closure of stomata (d) Decrease in transpiration due to closure of stomata

2. Hydathodes are found in:

(a) Stem (b) Leaves (c) Roots (d) All of these

3. Osmotic pressure is highest in

(a) Hydrophytes (b) Mesophytes (c) Xerophytes (d) Halophytes

4. A person passes much urine and drinks much water but his blood glucose level is normal. This

condition may be the result of:

(a) a reduction in insulin secretion from pancreas

(b) a reduction in vasopressin secretion from posterior pituitary

(c) a fall in the glucose concentration in urine

(d) an increase in secretion of glucagon

5. Both adrenaline and cortisol are secreted in response to stress. Which of the following statements is

also true for both of these hormones? :

(a) They act to increase blood glucose

(b) They are secreted by the adrenal cortex

(c) Their secretion is stimulated by adrenocorticotropin

(d) They are secreted into blood within seconds of the onset of stress.

6. Thigmotropism is shown by :

(a) Lamina (b) Tendrils (c) Root apex (d) Thorns

7. Parthenocarpic fruits can be produced by application of auxin :

(a) IAA (b) IBA (c) NAA (d) All of these

8. Immediately after fat absorption, monoglycerides move into :

(a) lymph vessels (b) blood vessels (c) villi (d) chylomicron

9. Main role of minor elements is to act as :

(a) Constituent of hormones (b) Binder of cell structure

(c) Cofactor of enzymes (d) Constituent of amino acids

10. Plants require sulphur for :

(a) ATP synthesis (b) Protein synthesis

(c) Glucose synthesis (d) DNA replication




11. Zinc is required for:

(a) Stomatal opening (b) Stomatal closure

(c) Biosynthesis of lAA (d) Oxidation of carbohydrates

12. Pons connects :

(a) Brain with spinal cord (b) Cerebrum with cerebellum

(c) Two-lobes of cerebellum (d) Two cerebral hemispheres

13. Mammalian brain is characterized from the brain of other animals through :

(a) Cerebellum (b) Cerebrum (c) Corpus callosum (d) Optic lobes

14. In sugarcane, CO2 is fixed in malic acid with the help of enzyme :

(a) PEP carboxylase (b) RuBP carboxylase

(c) Ribulose phosphate kinase (d) Fructose phosphatase

15. Enzyme required in early CO2 fixation in C4 plant:

(a) RuBP carboxylase (b) RuBP oxygenase

(c) PEP carboxylase (d) PGA dehydrogenase

16. In photosynthesis photolysis of water is used in :

(a) reduction of NADP+ (b) oxidation of NADP

(c) oxidation of FAD (d) none of these

17. Blood maintains homeostasis in body by :

(a) Replenishment of O2 and nutrients, elimination of wastes.

(b) Replenishment of O2 and elimination of CO2

(c) Maintenance of sugar level, conversion of amino acids into urea and destruction of worn out RBCs

(d) Maintenance of ion concentration in blood and body fluids by eliminating nitrogenous wastes

18. In ventricular systole, oxygenated blood is pumped into:

(a) Pulmonary artery and deoxygenated into artery

(b) Aorta and deoxygenated into pulmonary vein

(c) Pulmonary vein and deoxygenated into pulmonary artery.

(d) Aorta and deoxygenated into pulmonary artery

19. Nucleated biconvex RBCs are found in:

(a) rat (b) human (c) dog (d) frog

20. The last electron acceptor of ETC during oxidative phosphorylation is:

(a) Cyt b (b) Cyt a3 (c) H2 (d) CO2

21. Site for glycolysis or EMP is:

(a) Cytoplasm (b) Mitochondria (c) Chloroplast (d) Nucleus




22. During expiration diaphragm becomes:

(a) Flattened (b) Dome-shaped (c) Oblique (d) Normal

23. Book lungs are respiratory organs of :

(a) mollusca (b) mammals (c) arachnida (d) earthworm

24. One of the following is not a function of bones :

(a) place for muscle attachment

(b) protection of vital organs

(c) secretion of hormones for calcium regulation in blood and bones

(d) production of blood corpuscles

25. Total number of bones in the hind limb of man is:

(a) 21 (b) 14 (c) 30 (d) 24

26. Haemodialysis is done in the condition when person is suffering from :

(a) Diabetes (b) Uremia (c) Anaemia (d) Goitre

27. Renin is released from:

(a) Juxtaglomerular apparatus (b) Cortical nephron

(c) Collecting duct (d) Pelvis

28. Glucose is taken back from glomerular filtrate through:

(a) active transport (b) passive transport

(c) osmosis (d) diffusion

29. Emulsification is the function of:

(a) bile (b) lipases (c) esterases (d) proteases

30. Glucose is stored in liver as :

(a) starch (b) glycogen (c) cellulose (d) sucrose




Section – B {Physics}

31. The volume V of water passing any point of a uniform tube during t seconds is related to the cross-

sectional area A of the tube and velocity u of water by the relation V A u t which one of the

following will be tube?

(a) (b) (c) (d)

32. When a wave traverses a medium, the displacement of a particle located at x at time is given by

y asin bt cx where a, b and c are constants of the wave. The dimensions of b are the same as those

by

(a) wave velocity (b) amplitude (c) wavelength (d) wave frequency

33. If velocity (V), force (F) and energy (E) are taken as fundamental units, then dimensional formula for

mass will be

(a) 2 0 1V F E (b) 0 2V FE (c) 2 0VF E (d) 2 0V F E

34. The acceleration a of a particle moving with an initial velocity u varies with distance x as a = k x

where k is a constant. The distance covered by the particle when its velocity becomes 3u is given by

(a)

2/323u

k (b)

4/323ku (c)

2/326u

k (d)

2/32u

3k

35. The velocity v of a particle moving in a straight line varies with distance x as v = k x where k is a

positive constant. The distance x varies with time t as

(a) x t (b) x t (c) 3/2x t (d) 2x t

Space For Rough Work




36. A police jeep moving at a constant speed v on a straight road is chasing a thief riding on motor-cycle.

The thief starts from the rest when the police jeep is at a distance x away and accelerates at a constant

rate a. The police will be able to catch the thief if

(a) v ax (b) v 2ax (c) v 2 ax (d) ax

v2

37. The driver of a train moving at a speed v1 sights another train at a distance d ahead of him, moving in

the same direction with a slower speed v2. He immediately applies brakes to achieve a constant

retardation a. There will be no collision if d is greater than

(a)

2

1 2v v

a (b)

2 21 2v v

a (c)

2

1 2v v

2a (d)

2 21 2v v

2a

38. Two bodies are projected horizontally in opposite directions with velocities u1 and u2 from the top of a

building. If their velocities become perpendicular to each other after falling through a distance h, then

(a) 1 2u uh 2

g (b) 1 22u u

hg

(c) 1 22u uh

2g (d) 1 2u u

h2g

39. A body is projected with a speed u at an angle with the horizontal. The speed of the body when its

velocity vector makes an angle with vertical is

(a)ucos

cos (b)

ucos

sin (c)

usin

cos (d)

usin

sin

40. A body is projected with kinetic energy K at an angle of 600 with the vertical. The kinetic energy of the

body when it is at the highest point on the trajectory is

(a) zero (b) 3K

4 (c)

K

2 (d)

K

4





41. A force F is applied horizontal to block A of mass m1 which is in contact with a block B of mass m2, as

shown in fig. If the surface are frictionless, the force exerted by A on B is given by

(a) 1

2

mF

m (b) 2

1

mF

m (c) 1

2 2

m F

(m m ) (d) 2

2 1

m F

m m

42. A block of mass 10 kg is placed at a distance of 5 m from the rear end of a long trolley as shown in fig..

The coefficient of friction between the block and the surface below is 0.2. Starting from rest, the trolley

is given a uniform acceleration of 3 ms–2. At what distance from the starting point will the block fall off

the trolley ? Take g = 10 ms–2.

(a) 15 m (b) 20 m (c) 25 m (d) 30 m

43. A given object takes n times as much time to side down a 450rough incline as it takes to side down a

perfectly smooth 450 incline. The coefficient of kinetic friction between the object and the incline given

by

(a) 2k 1/ 1 n (b) 2

k 1 1/ n (c) 2k 1/ 1 n (d) 21 1/ n





44. Two blocks A and B are connected to each other by a string and a spring of a force constant k, as shown

in Fig., The string passes over a frictionless pulley as shown. The block B slides over the horizontal top

surface of a stationary block C and the block A slides along the vertical side of C both the same uniform

speed. The coefficient of friction between the surfaces of the block B and C is . If the mass of block A

is m, what is the mass of block B?

(a) m

(b) m

(c) m (d) m

45. A smooth inclined plane of angle of inclination 300 is placed on the floor of a compartment of a train

moving with a constant acceleration a. When a block is placed on the inclined plane, it does not slide

down or up the plane. The acceleration a must be

(a) g (b) g

2 (c)

g

2 (d)

g

3

46. A body is sliding down a rough inclined plane of angle of inclination for which the coefficient of

friction varies with distance x as x kx , where k is a constant. Here x is the distance moved by the

body down the plane. The net force on the body will be zero at a distance x0 given by

(a) tan

k (b) k tan (c)

cot

k (d) k cot





47. The displacement x of a particle of mass m moving in a straight line varies with time t as x = kt3/2 under

the action of a force F where k is a constant. The work done by the force is proportional to

(a) t (b)t (c) 3/2t (d)t2

48. A uniform chain of mass M and Length L has a part l of its length hanging over the edge of the table. If

the friction between the chain and the edge is neglected, the word done to pull the length l on the table

is

(a) 2Mgl

L (b)

2Mgl

2L (c)

2MgL

l (d)

2MgL

2l

49. One end of an elastic spring of natural length L and spring constant k is fixed to a wall and the other

end is attached to a block of mass m lying on a horizontal frictionless table (fig.,). The block is moved to

a position A so that the spring is compressed to half its natural length and then the released. What is

the velocity of the block when it reaches position B which is at a distance 3L

4from the wall

(a)L k

4 m (b)

L 2k

2 m (c)

L 3k

4 m (d)

L k

2 m

50. A car of mass m starts from rest at time t =0 and is driven on straight horizontal road by the engine

which exerts a constant force F. If friction is negligible, the car acquires kinetic energy E at time t and

develops a power P. Which of the following is correct?

(a) E t (b) 2E t (c) 3/2P t (d) 2P t





51. Two identical balls marked 2 and 3, in contact with each other and at rest on a horizontal frictionless

table, are hit head-on by another identical ball marked 1 moving initially with speed v as shown in fig..

What is observed, if collision is elastic?

(a) Ball 1 comes to rest and balls 2 and 3 roll out with speedv

2each.

(b) Balls 1 and 2 come to rest and ball 3 rolls out with speed v each.

(c) Balls 1, 2 and 3 roll out with speed v

3each.

(d) Balls 1, 2 and 3 come to rest.

52. A body of mass m = 1 kg is dropped from a height h = 40 cm on a horizontal platform fixed to one end

of an elastic spring, the other being fixed to a base, as shown in fig.. As a result the spring is

compressed by an amount x = 10 cm. What is the force constant of the spring. Taken g = 10 ms–2.

(a) 600 Nm–1 (b) 800 Nm–1 (c) 1000Nm–1 (d) 1200 Nm–1





53. A particle, which is constrained to move along the x-axis, is subjected to a force in the same direction

which varies with the distance x of the particle from the origin as F(x) = –kx + ax3. Here k and a are

positive constants. For x 0 , the functional form of the potential energy U(x) of the particle is (see fig.)

54. Two particles of masses m and 4m have linear momenta in the ratio 2 : 1. What is the ratio of their

kinetic energies?

(a) 2 (b) 2 (c) 4 (d) 16

55. Three particles of the same mass lie in the x – y plane. The (x, y) coordinates of their positions are

(1, 1), (2, 2) and (3, 3) respectively. The (x, y) coordinates of the centre of mass are

(a) (1, 2) (b) (2, 2) (c) (4, 2) (d) (6, 6)

56. A particle is moving in a circle of radius r under the action of a force F = 2αr which is directed towards

centre of the circle. Total mechanical energy (Kinetic energy + potential energy) of the particle is

(take potential energy = 0 for r = 0) :

(a) 31αr

2 (b) 35

αr6

(c) 34αr

3 (d) 3αr





57. A vector A is rotated by a small angle θ radians θ 1 to get a new vector B . In that case B A

is :

(a) A θ (b) B θ A (c) 2θ

A 12

(d) 0

58. A uniform thin rod AB of length L has linear mass density bx

μ x aL

, where x is measure from A. If

the CM of the rod lies at a distance of 7

12L from A, then a and b are related as :

(a) a = 2b (b) 2a = b (c) a = b (d) 3a = 2b

59. Diameter of a steel ball is measured using a vernier calipers which has divisions of 0.1 cm on its main

side (MS) and 10 divisions of its vernier scale (VS) match 9 divisions on the main scale. Three such

measurements for a ball are given as :

S. No. MS (cm) VS divisions

1 0.5 8

2 0.5 4

3 0.5 6

If the zero error is – 0.03 cm, then mean corrected diameter is :

(a) 0.53 cm (b) 0.56 cm (c) 0.59 cm (d) 0.52 cm

60. A block of mass 0.1 kg is connected to a spring of unknown spring constant k. It is compressed to a

distance x from rest. After approaching half the distance x

2from equilibrium position, it hits another

block and comes to rest momentarily, while the other block moves with a velocity 3ms–1, the total

initial energy of the spring is

(a) 0.3 J (b) 0.6 J (c) 1.5 J (d) 0.8 J





Section – C {Chemistry}

61. A 5 M solution of H2SO4 is diluted from 1 litre to 10 litres. What is the normality of the solution?

(a) 0.25 N (b) 1 N (c) 2N (d) 7 N

62. If 0.5 mol of BaCl2 is mixed with 0.2 mol of Na3(PO4)2 that can be formed is

(a) 0.7 (b) 0.5 (c) 0.3 (d) 0.1

63. At a given temperature, density of gas x is twice as that of has y and molar mass of x is one third of gas

y. The ratio of their pressure will be

(a) x

y

P 1

P 4 (b)

x

y

P4

P (c)

x

y

P6

P (d)

x

y

P 1

P 6

64. Which of the following plots is correct?

(a) (b) (c) (d)

65. Which of the following statements is not true?

(a) The pressure of a gas is due to collision of the gas molecular with the wall of the container (b) The

molecular velocity of any gas is proportional to the square root of the absolute temperature.

(c) The rate of diffusion of a gas is directly proportional to the density of the gas at constant pressure.

(d) Kinetic energy of an ideal has is directly proportional to the absolute temperature.

66. The van der Waals equation reduces itself to the ideal gas equation at

(a) High pressure and low temperature (b) Low pressure and low temperature

(c) Low pressure and high temperature (d) High pressure alone.


T= constant

P

V P= constant

T

V

V= constant

T

P PV

T




67. The radius of which of the following orbits is same as that of the first Bohr’s orbit of hydrogen atom?

hydrogen atom is

(a) He+ (n=2) (b) Li2+ (n=2) (c) Li2+ (n=3) (d) Be3+ (n=2)

68. The energy of hydrogen atom in its ground state is -13.6 eV. The energy of the level corresponding to

the quantum number n=5 is

(a) -0.54 eV (b) -5.40 eV (c) -0.58 eV (d) -2.72 eV

69. The wavelength associated with a golf ball weighting 200 g and moving at a speed of 5 m/h is of the

order

(a) 10–10 m (b) 10–20 m (c) 10–30 m (d) 10–40 m

70. The electrons identified by quantum number n and l,

(i) n = 4, l = 1 (ii) n = 4, l = 0

(iii) n = 3, l = 2 (iv) n = 3, l = 1

can be placed in order of increasing energy, from the lowest to highest, as

(a) (iv) < (ii) < (iii) < (i) (b) (ii) < (iv) < (i) < (iii)

(c) (i) < (iii) < (ii) < (iv) (d) (iii) < (i) < (iv) < (ii)

71. Uncertainty in position and momentum are equal, Uncertainty in velocity is

(a)h

(b)h

2 (c)

1 h

2m (d) none of these

72. Which of the following represents the given mode of hybridization sp2 – sp2 –sp – sp from left to right?

(a) H2C=CH–C N (b) HC C – C H

(c) H2C=C=C=CH2 (d)

73. Which of the following are isoelectronic and isostructural?

23 3 3 3NO ,CO ,ClO ,SO

(a) 23 3NO ,CO (b) 3 3SO ,NO (c) 2

3 3ClO ,CO (d) 23 3CO ,SO


CH2

CH2




74. According to molecular orbital theory which of the following statements about the magnetic character

and bond order is correct regarding 2O .

(a) Paramagnetic and bond order < O2 (b) Paramagnetic and bond order > O2

(c) Diamagnetic and bond order < O2 (d) Diamagnetic and bond order > O2

75. Which of the following reaction corresponds to the definition of enthalpy of formation?

(a) 22 g 2 g l

1H O H O

2 (b) 22 g 2 s l

1H O H O

2

(c) 22 g 2 l l

1H O H O

2 (d) 22 g 2 g l

H O 2H O

76. Calculate H of the reaction,

H

C ClH

Cl

(g)C(g) + 2H(g) + 2Cl(g)

The average bond energies of C–H bond and C – Cl bond are 416 kJ and 325 kJ mol–1 respectively.

(a) 1482 kJ (b) –1482 kJ (c) 1282 kJ (d) None of these

77. Consider the reaction, N2(g) + 3H2(g) 2NH3(g) carried out at constant temperature and pressure. If H

and U are enthalpy and internal energy change for the reaction, which of the following expressions is

true?

(a) H 0 (b) H U (c) H U (d) H U

78. Kp/Kc for the reaction g 2 g 2 g

1CO O CO

2

(a) RT (b) (RT)1/2 (c) Kp (d) 1

RT





79. When pressure is applied to the equilibrium system

Ice Water

which of the following phenomenon will happen?

(a) More ice will be formed (b) Water will evaporate

(c) More water will be formed (d) Equilibrium will not be formed.

80. The conjugate base of OH– is

(a) O2 (b) H2O (c) O– (d) O2–

81. pH of solution produced when an aqueous solution of pH = 6 is mixed with an equal volume of an

aqueous solution of pH = 3 is about

(a) 3.3 (b) 4.3 (c) 4.0 (d) 4.5

82. The solubility of A2X3 is ‘s’ mol dm–3. Its solubility product is

(a) 6 s4 (b) 64 s4 (c) 36 s5 (d) 108 s5

83. In the standardization of Na2S2O3 using K2Cr2O7 by iodomentry, the equivalent weight of K2Cr2O7 is

(a) (Molecular weight)/2 (b) (Molecular weight)/6

(c) (Molecular weight)/3 (d) Same as molecular weight

84. The reaction, 3aq aq aq3ClO ClO 2Cl is an example of

(a) Oxidation reaction (b) Reduction reaction

(c) Disproportion reaction (d) Decomposition reaction

85. The maximum number of hydrogen bonds in which water molecule can participate is

(a) 1 (b) 2 (c) 3 (d) 4

86. Which of the following statements is incorrect?

(a) H2O2 is a pale blue viscous liquid

(b) H2O2 can act as an oxidizing as well as a reducing agent.

(c) In H2O2 the two hydroxyl groups lie on the same plane.

(d) H2O2 has an ‘open-book’ structure.





87. The ionic mobility of alkali metal ions in aqueous solution in maximum for

(a) K (b) Rb (c) Li (d) Na

88. Thermal stability of alkaline earth metal carbonates decreases in the order

(a) BaCO3 > SrCO3 > CaCO3 > MgCO3 (b) BaCO3 > SrCO3 > MgCO3 > CaCO3

(c) CaCO3 > SrCO3 > MgCO3 >BaCO3 (d) MgCO3 > CaCO3 > SrCO3 > BaCO3

89. Amongst LiCl, RbCl, BeCl2 and MgCl2 the compounds with greater and the least ionic character,

respectively are

(a) LiCl and RbCl (b) RbCl and BeCl2 (c) RbCl and MgCl2 (d) MgCl2 and BeCl2

90. IUPAC name of

CH3

OH

(a) 3-Methylhexan-2-enol (b) 4- Methylhexan-2-enol

(c) 4-Methyhpentan-3-enol (d) 4-Methylpentan-2-enol


–Good Luck

‘s Pioneer’s · PDF fileThe question paper contains 90 objective multiple ... Each...

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