2008 Physics Chemistry

8/6/2019 2008 Physics Chemistry

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COMl\ION ENTRANCE TEST M200819_,04 - 2008 PHYSICS &CHEMISTRY

(COMBINED PAPER)

120 150 MINUTES 140 MINUTES

A-I' 147385IMPORT,ANT INSTRUCTIONS TO CANDIDATES

(Candidates are advised to read the following instructions carefully, before answering on OMRanswer sheet.)1. Ensure that GET No. has been entered and shaded the respective circles on the OMR answer sheet.2. ENSURE THAT TilE TIMING, MARKS PRINTED ON THE OMR ANSWER SHEET ARE NOTDAMAGEDI MUTlLATED I SPOILED.3. This Question Booklet is issued to you by the I"nvigilator after the 2nd Bell, i.e., afLer.10.00a.m,4. Enter the Serial Number of this question booklet an the OMR answer sheet.5. Carefully enter the Version Code ofthis question booklet on the OM"Ranswer sheet and SHADE the respectivecircles completely,'6. As answer sheets are designed to.suit the Optical Mark Reader (OD.1R)system, please take special care whilefilling and shading the CET NO. & 'Version Code of this question booklet.7. DONOT FORGET TOSIGN AT TH E BOTIOM PORTION OF O:MRANS\iVER SHEET IN THE SPACE PROVIDED.B . Until the 3nl BeHis rung at 10.10 a.m. :. Do not remove the staple present on the right hand side of this question booklet .Do not look inside this question booklet .

Do,not start answering on the O:MRanswer sheet.9. Moor the 3n1 Bell is rung at 10.10 a.m., remove the staple present on the right hand side of this question bookletand start answering on the O M R answer sheet. '10. This question booklet contains 120 questions and each question will have four different options I choices.1L During the subsequent 140 minutes:

. Read each question carefully. Determine the correct answer from out ofthe four available options I choicesgiven under each question. Completely darken Ishade the relevant circle witb a BLUE OR BLACK INK BAlLPOINT PENagainst the question number on. the OMRanswer sheet.CORRECT METHOD OF SHADING THE CIRCLE ON THE OMR SHEET IS AS SHOWN BELOW:

00.012. Please note that even a minute unintended ink dot on the OMR sheet will also berecognised and recorded by thescanner. Therefore, avoid multiple markings of any kind on the OMR answer sheet.13. Use the space provided on each page of the question booklet for Rough Work AND do not use the OMR answersheet for the same.14. After the last bell is rung at 12.30 p.m., stop writing on the OMR answer sheet and affix your LEFT HANDTHUMB IMPRESSION on-the Ol\ffi answer sheet as pel' the instructions.15. Hand over the OMR ANSWER SHEET to the room invigilator as. it is.16. After separating and retaining the top sheet (KEA Copy), the invigilator will return the bottom sheet replica(Candidate's copy) to you to.carry horne for self-evaluation.1I. . Preserve the replica ofthe OMR answer sheet for a minimum period ofOne year.

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4 A-I1. A ray of light enters from a rarer to a denser medium. The angle of incidence is i. Then

the reflected and refracted rays are mutually perpendicular to each other. The criticalangle for the pair of media i~

1) Sin-1(Tan i ) 2) Tan -1(Sin i )3) Sin -1 (Cot i) 4) Cos-1 (Tan i)

2. A fish inwater' (refractive index n) looks at a bird vertically above inthe air. Ify is theheight of the bird and x is the depth of the fish from the surface, then the distance ofthe bird as estimated by the fish is

1) X + Y l l - ~ J3) x + + < J

2) X +ny

3. Figure shows a mixture of blue, green and red coloured rays incident normally on a lightangled prism. The critical angles of the material of the prism for red, green and blue are46, 44 and 43 respectively, The arrangement will separate

430 1) red colour from blue and greenB--..::...:;_-440 2) blue colour from red and greenG 3) green colour from red and blue46R---"'" 4) all the three colours.

. 4. A convex and a concave lens seperated by distance d are then put in contact. The focallength of the combination

1) decreases 2) increases3) becomes a 4) remains the same

5,. A convex lens is made of 3 layers of glass of 3 different materials as inthe figure. A pointobject is placed on its axis. The number of images of the object are

1) 12) 2.3) 34) 4

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5 A-I,6. If f . 1 o is permeability of free space and EO is pennittivity of free space, the speed of

light in vacuum is given by

1) . J ~lo EO 2) 8:3) J J . l o IEo 4) ~ E ; : Q '

7. In Young's double slit experiment, a third slit is made in between the double slits ..Then1) intensity of fringes totally disappears.2) only bright light is observed on the screen.3) fringes of unequal width are formed ..4) contrast between bright and dark fringes is reduced.

S. The maximum number of possible interference maxima when slit separation is equalto 4 times the wavelength of light used ina double slit experiment is1) 00 2) 93) 8 4) 4

9. In a Fraunhofer diffraction experiment at a single slit using a light of wavelength400 nm, the first minimum is formed at an angle of 30. The direction e of the firstsecondary maximum is given by

1) Sin-1 % 2) $in-1 %3) Sin-1 X 4) Tan-1 %

10.. Maximum diffraction takes place ina given slit for1) Y - rays '2) ultraviolet light3) infrared light 4) radio waves


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611. An unpolarised beam of intensity 10 falls on a polaroid. The intensity of the emergent

light is1) 1% 2) 103) 1% 4) Zero

12. Which of the following is a dichroic crystal ?1) Quartz 2) Tourmaline.3 ) Mica 4) Selenite

13. Two identical metal spheres charged with +12J1F and -8J1F are kept at certaindistance inair. They are brought into contact and then kept at the same distance. Theratio of the magnitudes of electrostatic forces between them before and after contact is

" .1) '12: 13) 24: 1

2) 8: 14) 4; 1

14.. A small conducting sphere of radius r is lying concentrically inside a"bigger hollowconducting sphere of radius R. The bigger and smaller spheres are charged "WithQ and q( Q > q ) and are insulated from each other. The potential difference between the sphereswill be

_1 ( q _ : 1 _ J1) 4nEO r R

15. The charges Q, + q and + q are placed at the vertices of an equilateral triangle of side l ..If the net electrostatic potential energy of the system is zero, thenQ is equal to

1) -% 2) -q3) . + % 4) zero


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7 A-I16. H ow many 611F,

1) 93) 3

200 V condensers are needed to make a condenser of 18f.lF, 600 V?2) 184) 27

17. The total energy stored in the condenser system shown in the figure will be

1) 2pJ3) 8~LJ

2) 4p,J4) 16 j1 J

18. A metal wire is subjected to a constant potential difference. When the temperature ofthe metal wire increases, the drift velocity of the electron in it1) increases, thermal velocity of the electron decreases2) decreases, thermal velocity of the electron decreases3) increases, thermal velocity of the electron increases4) decreases, thermal velocity of the electron increases

19. T he equivalent resistance between the points A and B will be (each resistance is 15Q)150D_.-J"""""'V\Mr--_

150

_ 1) 30.Q

15Q.2) 8.Q3) . 10 Q4) 40 n15.Q

20. The terminals of a 18 V battery with an internal resistance of 2,4n are connected to acircular wire of resistance 24 Q at two points distant at one quarter of the circumferenceof a circular wire. The current through the bigger arc of the circle will be

1) 0.75A..3)2.25 A

2) 1.5 A4) 3 A


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8 A -121. The potential difference between A and B in the following figure is

6Q 4 VA~II~II---~B2 A 12 V 9Q . SQ1) 32 V3) 24V 2)48 V4) 14V

22.. Themagnetic field at the centre 'of a circular current carrying conductor.of radius r is B ,cThe magnetic field on its axis at a distance r from the centre is B .,The value ofaB :B will bec a1) 1: J23) 2.J2: 1

2) 1: 2J24) . J 2 : f

23.. Current '1' is flowing ina conductor shaped as shown:inthe figure. The radius of the curved part is r andthe length of straight portion is very large. The valueof the magnetic field at the centre 0 will be

1 ) 1101 (31 1 : + 1 J 2)411:r 2 J!L ( ~ - 1 Jrrr 24) 1101 ( 1 1 : 1 J4ll"r 2

24. 'Iwo tangent galvanometers A and Bare identical except in their number of turns. Theyare connected in series. On passing a current through them, deflections of 60' and 30are produced, The ratio of the number of turns in A and B is

1) 1:38) 1: 2

2) 3: 14) 2: 1

25. The resultant force on the current loop PQRS due to a long cUITe.ntcarrying conductorw in be

r 1 ) 10-4N2) 3,6 x 10-4N20A 15em20 A 1 3) 1..8 x lO-4N

4) 5 x 1O-4N2cm 10em

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9 A-I26.. A certain current on passing through a galvanometer produces a deflection of 100

divisions. When a shunt of one ohm is connected, the deflection reduces to 1division.The galvanometer resistance is1) 100.Q3) 10Q

2) 99 Q4} 9.9'Q

27. Two similar circular loops carry equal currents i n the same direction. On moving thecoils further apart, the electric current will

1) increase in both2) decrease in both3) remain unaltered4) increases in one and decreases in the second

28. The value of alternating emf E in the given circuit will be- VR = 80V_ f- - Vc ""100V---

.. _ ._ N _.W 'N _ '''_ ' _ _ f!1l-{m [ 6 1 -

4 m

_ , _ _ IJ+- V =40V~L@

E, 50 Hz1) 220 V3) 100V

2) 140V4) 20 V

29. A current of5,A is flowing at .220 V in the primary coil of a transformer. If the voltageproduced in the secondary coil is 2200 V and 50% of power is lost, then the current inthesecondary will be

1) 2.5,A3) 0.25 A

2) 5 A4) 0.5 A

30. For a series LCR circuit at resonance, the statement which is not true is1) Peak enel'gy stored by a capacitor = peak energy stored by an inductor2) Average power = apparent power3) Wattless current is zero4) Power factor is zero


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10 A-l31. Solar spectrum is an example for

1) line emission spectrum3) band absorption spectrum

2) continuous emission spectrum4) line absorption spectrum

32. When a piece of metal is illuminated by a monochromatic light of wavelength L, thenstopping potential 18 3Vs. When same surface is illuminated by light of'wavelength 2A.,then stopping potential becomes.Vs. The value of threshold wavelength for photoelectricemission will be

1) 4A-3) %1

2) 8A .4) 6A .

.33. 'The maximum kinetic energy of emitted electrons in a photoelectric effect does notdepend upon

1) wavelength 2) frequency3) intensity 4) work function

34.. The ratio of minimum wavelengths of Lyman and Balmer series will be1) 1.253) 5

2) 0.254) 10

35... Hydrogen atom does not emit X-rays because1) it contains only a single electron2) energy levels in it are far apart3. ) its size is very small4) enetgy levels in it are very close to each other


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11 A-I36. Ifan electron and a proton have the same de-Brogliewavelength, then the kinetic

energy of the electron is1) zero3) .more than that -o f a proton

2) less than that of a proton4) equal to that of a proton

o37. 1\;1)'0 protons are kept at a separation of 40A. Fn is the nuclear force and Fe is theelectrostatic force between them. Then

1) Fn Fe3) s; Fe

2) Fn =Fe4) r; -s;

38. Blue colour of sea water is due to1) interference of sunlight reflected from the water surface2) scattering of sunlight by the water molecules3) image of sky in water4) refraction of sunlight

39. The ratio of the nuclear radii of elements with mass numbers 216 and 125 is1) 216: 1253) 6: 5

2) .J216: Jl254) none of these

40. On bombarding U 235 by slowneutron, 200MeVenergy is released. If the power outputof atomic reactor is 1.6MW, then the rate of fission will be

1) 5 x 1022/s 2) 5 x 1016/ s3) 8 x 1016/s 4) 20 x 1016ts

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12 A-I"41. The masses of two radioactive substances are same and their half lives are 1 year and

2 years respectively" The ratio of their activities after 6 years will be1) 1:4 2) 1:28) 1:3 4) 1:6

42. 92U235 undergoes successive disintegrations with the end product of 82Pb 203. Thenumber of a andf3 particles emitted are

1) , a = 6; f 3 = 4 2) a =6, f 3 =03) a=8, ( 3 = ,6 "4) X =3, f 3 =3

43. The most stable particle in Baryon group is1) neutron 2) omega - particle3) proton 4) lamda - particle

44. In an unbiased p-n junction1) Potential at p is more than that at n2) Potential at p is less than that at n3) Potential at p is equal to that at n4) Potential at p is +ve and that at n is -ve

45. To get an output y = 1from the circuit shown, the inputs A, Band Cmust be respectively

yABC

1) 0,1,. 03) 1, 0, 1

2) 1, 0, 04) 1,.1, 0


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13 A~ 146. Dimensional formula for the universal gravitational constant G is

2 ) MOLoTo4) M-1L3T-1

47. A body is projected vertically upwards. The times corresponding to height h whileascending and while descending are t1 and t2 respectively. Then the velocity ofprojectionis (g is acceleration due to gravity)

1 ) gM 2) gt1t2t1+ t23) g~tlt2 4) g (t 1 + t2 )2 2

4.8. A mass of 10 kg is suspended from a spring balance. Itis pulled aside by a horizontalstring so that it makes an angle of H O D with the vertical. The new reading ofthe balance is

1) 20 kg.wt 2) 10 kg ..wt3) lOJ3 kg.wt 4) 20J3 kg.wt

49. A body weighs 50 grams in air and 40 grams in water ..How much would it weigh in aliquid of specific gravity 1.5?1) 30 grams 2) 35 grams3) G5 grams 4) 45 grams

50. A body ofmass 4 kg is accelerated upon by a constant force, travels a distance of 5 m inthe first second and a distance of 2 m inthe third second. The force acting on the body is1) 2 N 2) 4N3) 6N 4) aN


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14 A-I51. A simple pendulum is suspended from the. ceiling of a lift. When the lift is at rest its time

period i~ r. With' ~hat acceleration should the lift be accelerated upwards in order tbreduce its period to T 12? (g is acceleration-due to gravity).

1) 2g 2) 3 g3) 4g 4) g

52. I( Y is the ratio of specific heats and R is the universal gas constant, then the molarspecificheat at constant volume C; is given by

1 ) yR 2) ( y -l)RyR yR3) y-l 4) y-1

53. An ideal gas is taken via path ABCA as shown infigure. The network done in the whole cycle is

1) 3PIVl2) -3PIV13) 6P1V1

pP --- C4 1

54.

Pl __!--, -~ BL-~:-----~V4) zero 0 V] 3V]

In which of the processes, does the internal energy of the system remain constant?1) Adiabatic 2) Isochoric3) Isobaric 4) Isothermal

55. The coefficient of thermal conductivity ofcopper is 9 times that ofsteel. In the compositecylindrical bar shown inthe figure, what will be the temperature at the junction of copperand steel? .

1000e o -c( J copper I steel )~18cm - + - 6 cm=-x

1) 75C 2) 67C3) 25C 4) 33C


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15 A- I56. The equation of a simple harmonic wave is given b y y =6Sin2n(2t -O..Iz ],where x and

yare in nun and t is in seconds. The phase difference between two particles 2 mm apartat any instant is

2) 3604) 720

5,7. With what velocity should an observer approach a stationary sound SOlITCe so that theapparent frequency of sound should appear double the actual frequency? (v is velocity ofsound). .1) . %3) 2 u

2) 3 u4) v

58. If a black body ,emit~ 0..5 joules of energy per secondwhen it is at 27C, then theamount of energy emitted by it when it is at 627C will be

.1) 40.5 J3) 13.5 J

2) 162J4) 135J

59. A string vibrates with a frequency of 200 Hz. When its length is doubled and tension isaltered, it begins. to vibrate with a frequency of 300 Hz. The ratio of the new tension tothe original tension is1) 9.: 13) 3: 1

. 2) 1:94) 1: 3

60. How many times more intense isa 60 dB sound-than a 30 dB sound?1) 1000. 2) 23) 100 4) 4

(Space. for Rough Work)

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19' A~ 16,1. The correct order inwhich the first ionisation potential increases is

1) Nfl, K, Be3) K, Be, Na

2) K, Na, Be4) Be, Na, K

62. 10 em3 of 0..1 N monobasic acid requires 15 cm3 of sodium hydroxide solution whosenormality is

1) 1.5 N 2) 0.15N3) 0.066 N 4) 0.66 N

63. The IUPAC name for tertiary butyl iodide is1) 4-Iodobutane 2) 2-Iodobutane3) I-Iodo, 3-methyl propane 4) 2-Iodo 2-methyl propane

64. When sulphur dioxide is passed in an acidified K 2Cr2 07 solution, the oxidation stateof sulphuris changed from1) + 4 to 0 2) + 4 to + 2

3) + 4 to + 6 4) + 6 to + 465. Mass of 0.1 mole of Methane is

1) 1g3) 1.6 g

2) 16 g4) 0.1 g


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20 A-I66. Methoxy methane and ethanol are

1) Position isomers 2) Chain isomers3) Functional isomers 4) Optical isomers

67. When the azimuthal quantum number has the value of 2, the number of orbitals possibleare

1) 73) 3

2) 54) 0

68. For the reaction Fe203 + 3CO --4 2Fe + 3C02 the volume of carbon monoxiderequired to reduce one mole of ferric oxide is

1) 22.4dm3 2) 44.S dm34) 11.2 dm33) 67.2 dm3

69.. The monomers of BWla-S rubber are1) vinyl chloride and sulphur3) styrene and butadiene

2) butadiene4} isoprene and butadiene

70. An element with atomic number. 21 is a1) halogen 2) representative element3) transition element 4) alkali metal


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21 A-I71. The maximum number of hydrogen bonds that a molecule of water can have is

1) 1 2) 23) 3 4) 4

72. A gas deviates from ideal behaviour at a high pressure because its molecules1) attract one another 2) show the Tyndall effect3) have kinetic energy 4) are bound by covalent bonds

73. The reagent used to convert an a1kyne to alkene is1) Zn I HCl3) Zn -Hg I nci

2) Sn I HCl4) Pd I H2

74. When compared to- AGO for the formation of Al{J3' the AGO for the formation ofC1'203 is

1) higher 2) lower3) same 4) unpredicted

75,. In order to increase the volume of a gas by 10%, the pressure of the gas should beV increased by 10 % 2) increased by 1 %

- 3) decreased by 10 % 4) decreased by 1 %


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22 "A-I76 " "Catalytic dehydrogenation of a primary alcohol gives a

1) secondary alcohol 2) aldehyde.3 ) ketone 4) ester

77 . Excess of pel5 reacts with cone. H2S04 giving1) chlcrcsulphonic acid 2) thionyl chloride3) sulphuryl chloride 4) sulphurous acid

78. If one mole of ammonia and one mole of hydrogen chloride are mixed in a closedcontainer to form ammonium chloride gas, then

1) MI > l1u3.) MI < au

2) MI = l1u4) there is no relationship

79. The compound. on dehydrogenation gives a ketone. The original compound is1) primary alcohol 2) secondary alcohol3) tertiary alcohol 4) carboxylic acid

80. Which is the most easily Iiquifiable rare gas ?1) Xe 2) Kr3) Ar 4) Ne


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23 A-I81. Mesomeric effect involves delocalisation of

1) pi electrons3) protons

2) sigma electrons4) none of these

82. Which of the following has the maximum number of unpaired 'd' electrons?1) Zn2+ 2) Fe2+3) Ni3+ 4) C U T

83. One mole of which of the" following has the highest entropy?1) liquid nitrogen 2) hydrogen gas3) mercury 4) diamond

84. Which of the following species does not exert a resonance effect?1) 2) +C6H5NH2 C6H5NH33) C6H ,pH 4) C6H;/JL

85. A complex compound in which the oxidation number of a metal is zero is1) K4 [ Fe (CN )6 13) [N i (CO )4] -

2) K3 [F e ( CN )6 J4) [Pi (NH3)4]Cl2


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24 A-I86. Three moles of pels' three moles of PCl3 and two moles of Cl2 are taken in a dosedvessel. If at equilibrium the vessel has 1..5 moles of PCl5, the number of moles of PCl3present in it is

1) 53) 6

2) 34) 4.5

87. How many optically active stereomers are possible 01' butan-2, 3-dial ?1) 1 2) 23) 3 4) 4

88. An octahedral complex is formed when hybrid orbitals of the following type are involved2) d sp 24) sp2d2

89. For the reaction 2HI(g) ~H 2(g) +12(g) -QKJ ; the equilibrium constant depends upon1) temperature3) catalyst

2) pressure4). volume

90. The angle strain .incyclobutane is1) 2444'3. ) 1922'

2) 2916'4) 9,44'


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25 A-I91. The number of nodal planes present in a *s antibonding orbitals is

1) 1 2).23) 0 4) 3

92. VVhich of the following electrolytic solutions has the least specific conductance ?1) 0.0.2N 2) 0...2 N3) .2 N 4) O.,002N

93.. The overlapping of orbitals in benzene is of the type1) sp -sp3. ) sp2 _sp2

2) p-p

94. The calculated 'bond order of superoxide ion (02") IS1) 2.53) 1.5

2) 24) 1

95. Which of the following can be measured. by the Ostwald.-Walker dynamic method?1) Relative lowering of vapour pressure2) Lowering of vapour pressure3) Vapour pressure of the solvent4) all of these


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26 A-I96. n-propyl bromide on treating with alcoholicKOH produces

1) propane 2) propene3) propyne 4) propanol

97. Mercury is a liquid metal because1) ithas a completely filled s-orbital2) it has a small atomic size3) it has a completely filled d-orbital that prevents d-d overlapping of orbitals4) it has a completely filled d-orbital that causes d-d overlapping

98. A compound is formed by elements A and B. This crystallises in the cubic structurewhere the A atoms are at the corners of the cube and B atoms are at the body centres.The simplest formula of the compound is

1) AB. 3 ) AsB4

2) AsB4) ABs

99. Anisole can be prepared by the action ofmethyl iodide on sodium phenate ..The reactionis called

1) Wurtz's reac.tion 2) Williamson's reaction3) Fittig's reaction 4) Etard's reaction

100. Malleability and ductility of metals can be accounted due to1) the presence of electrostatic force2) the crystalline structure in metal3) the capacity of layers of metal ions to slide over the other4) the interaction of electrons with metal ions inthe lattice


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27 A-I

101. An ionic compound is expected to have tetrahedral structure if r - ; { _ lies in the range of1) 0.414 to 0.7323) 0.155 to 0.225

2) 0.225to 0.4144) 0..73:2 to 1

102. Among the following, which is least acidic?1). phenol 2) O-cresol3) p-nitrophenol 4) p-chlorophenol

103. A ligand can also be regarded as1) Lewis acid3) Lewis base

2) Bronsted base4) Bronsted acid.104. The colour of sky is due to

1) transmission of light2) wavelength of scattered light3) absorption of light by atmospheric gases4) All of these

-105. Which of the following organic compounds answers to both iodoform test andFehling's test?

1) ethanol 2) methanal3) ethanal 4) propanone


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28 A -1106. Helium is used inballoons inplace ofhydrogen because it is

1) incombustible 2) lighter than hydrogen3) radioactive 4~ more abundant than hydrogen

107. The basic principle of Cottnell's precipitator is1) Le-chatelier's principle2) peptisation3) neutralisation of charge on colloidal particles4) scattering of light

-108. When carbon monoxide is passed over solid caustic soda heated to 200C, it forms1) Na~033) HCOONa

2) NaHC034) CH3COONa

109. N 2 + 3H 2 ~ 2NH 3 + heat. What is the effect of the increase of temperature on theequilibrium of the reaction?

1) equilibrium is shifted to the left2) equilibrium is' shifted,to the right3) equilibrium is unaltered4) reaction rate does not change

no. Hydrogen gas is not liberated when the followingmetal is added to dil. HCl1) Ag3) Mg

2) Zn4) Sn


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29 A-I111. Consider the Born-Haber 'cyclefor the formation of an ionic compound given below and

identify the' compound (Z) formed.

M(s) A l l ! M(g) /'Jl2 Mr~)~~XZ(g) tJ.H3 X(g) MI. X(g)

1) M +X-3) , M X

'112. In the brown ring test, the brown colour of the ring is due to1) ferrous nitrate ' 2) ferric nitrate3) amixture ofNO and N02 4) nitro soferro us sulphate

113. Amines behave as1) Lewis acids 2) Lewis base3) aprotic acid 4) neutral compound

114. Dalda is prepared from oils by1) oxidation 2) reduction3) hydrolysis 4) distillation

115. The chemical name of anisole is1) Ethanoic acid3) Propanone

2) Methoxy benzene4) Acetone


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30 A-I116. The number of disulpbide linkages present ininsulin are

1) 1 2) 23) 3 4) 4

117. 80 g of oxygen contains as many atoms as in1) 80 g of hydrogen 2) 1 g of hydrogen3) 10 g of hydrogen 4) 5 g of hydrogen

118. Which metal has a greater tendency to form metal oxide ?1) Cr.3) Al

2)' Fe4) Ca

119. Identify the reaction that does not take place in a blast furnace.1) CaC03~CaO +CO2 2) CaO +8i02 ~CaSi033) 2Fe{Jp, + 3C ~ 4Fe + 3C02 4) CO2 +C ~2CO

120. Waxes are esters of1) glycerol2) long chain alcohols3) glycerol and fatty acid4) long chain alcohols and long chain fatty acids


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2008 Physics Chemistry

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Transcript of 2008 Physics Chemistry