BOOKLET CODE

Inl'igllaton Signature
ENTRANCE EXAMINATION -2011

M. Sc. Chemistry
TIME: 2 HOURS MAXIMUM MARKS: 100
HALL TICKET NUMBER:
I

BOOKLET CODE:
D
INSTRUCTIONS
I. Write your HALL TICKET NUMBER and the BOOKLET CODE in the space provided above and also in the OMR ANSWER SHEET given to you.
2.
Make sure that pages numbcned from I present (excluding pages ..signed for rough wort).

3.
There 100 questions in this paper. All questioos carry equal marks.

4.
The.., Is oepUve marIdDg. Each wrong lIIIIWer carri.. ·0.33 mark


S. Answe.. to be marked on the OMR answer sheet following lbe instructions provided lbere upon.
6. Hand over both the question paper booklet and OMR answer sbeet at the end of the
examination.
7.
In case of a tie, the matl<s obtained in the first 2S questioos (PART·A) will be used to determine the order of merit

8.
No additiOtlal .beets will be provided. Rough work can be done in the space provided at the end of the booklet.

9.
Only non·programmable calculators allowed.

10.
UaefuJ constants provided on top of PART·A in the question paper.


V-II

UHfuI CoIlllaDII:
Rydberg constant 109737 em"; Faraday constant 96500 Planclc constant 6.625 x )er34 J oflight= 2.998x Ill' m..';BoUzmannconstant =1.380x 10'23JJC"I;Gasconstant=8.314 J Mass of elcc:tton =9.109 x lern kg; Mass of pillion =1.672 x 10'27 kg; Charge of electron=1.6x ler19C;1D =3.336x Il,"C I bar N RTJP= 0.059 V
I. PART·A Which of lite following is not a crystalline substance? CbarcoaI Graphite (C)Diamond Coo
2. The major product expected from the following reaction is H2O "­H,go. HgSO.
CH, 0 HsJltCH,

3. Consider the equilibrium X""" 2Y with equilibrium constant, Kc 3.6 M at 2S'C. If the initial concentrations arc [Xl. =1.0 M and fYlo =0.0 lite equilibrium concentration of

X al 2S [Xl..1S

4.
The sides of a triangle an: of length 3.0, 4.0 and 5.0 cm. If the side with length 5.0 cm is the base, what is the bcight of the triangle? W2Aem

5.
Which one among the following chlorides is dissociated to the least extent in aqucous solution?


ZoC1, HgCh BaCh AlCI,
2





6. The JUPAC name for the following compound is
H.C Clio CH.

4-vinyl-2-pcntyne 4-methylhcx-2-yn-S-ene


3-methylhex-4-yn-l-ene 3-methylhex-I-en-4-yne


7. X-ray diffractinn study of a crystal with a simple cubic lattice structure shows diffractinn from the plane appearing at the Bragg angle 9 20'. The angle at which the diffraction from the plane will appear is
9.8'
8.
Consider the plot of the function y IIx. Thetangentto this curve drawn at the point (I,I),wiUcutthex-axisal:

9.
A sample of water contains 200 ppm nf Ca". What is the mnlality of lbe solution with rcspectto Ca"? Atomic weight of Ca is 40. (A)0.2m 5 X 10.3 m (0)0.05 m

10.
The strongest B1'Wlostcd acid among the following is





V
fYCOOH

V
II. Which of the following is necessary for a process to be spootaneous (as change in entropy)?
as.,.,.. 0 as............
3


V-II

12. If two vertices of a cube chosen randomly arc painWi black and the """aining arc painWi white, what is the probability that the black vertices arc adjacent i.e. connected by an edge?
.!.
2 28
13. CuI, is unstable and it readily decomposes to

Cu and r Cu and CuI and h CuI and r
14. The major product of the following reaction is

QJ MeMgI
EloO









IS. The nickel-cadmium cell has a standard potential of 1.20 V. The cell reaction is
2 NiO(OH) Cd 2H,O 2 Ni(OHj, Cd(OHj,
What is the standard free energy change for this reaction?
kJ -38.7 kJ kJ kJ
16. If CosA then Cos4A (8)8.4 (C)4.4
17. The packing efficiency in the hop, bee and simple cubie lattices arc in the order

bee hop sc hop bee sc


hop sc bee sc hop bee


4


v-1

18. The nuc of decarboxylation ofisomeric carboxylic acids i.
()COOH
I
N N COOH N
tel> c:rCOOH

IN 0N
N COOH COOH
c:r
cooo



tel
N COOH 6N IN"
c:rcooo
0>u
N COOO
NN
19. Doubling all the cocfficicnlS in the equation for a cell reaction

doubles ff'. but docs not change dO"


doubles dOD. but docs not change E"


docs not change or dOD


doubles both E" and dOD


20.
The value of is

21.
The compounds ZoO and Fea show



stoichiometric and metal excess defects. respectively.


metal excess and metal deficiency defects. respectively.


metal deficiency and metal excess defects. respectively.


metal excess and stoichiometric defects. respectively.


5
V-II
22. An intenncdiote in racemization nf (R)-3-phenyl-2-butanone is
NOOH. PhJ;-CH3
aq.EtOH o

t
H3 OH

Ph""Y CH3

23. Prediet the sign of 6S for both of the following processes
I. 2 C (graphite) ..... 2 Co,
II. CoH,. ..... CoH,.

6S should be negative for I and positive for II


6S should be negative for I and negative for II


6S should be positive for I and positive for II


6S should be positive for I and negntive for II


••• I
.d f .
24. The rcmwn er 0 IS
x-I
(AI I 3
25. Whieh two colors of light cause the highest rate of photosynthesis?

Red and green Blue and green


Red and blue Grcen and yellow


6


v-I

PART·'B

26, Assuming the additivity of covalent radii 0.77 A. Br 1.14 AI. and assuming the distance between adjacent carbon atoms in the ring as 1.40 A. the distance between the centres of bromine atoms in 1.2-<1ibromobcnzene is
3.31 A 3,42 A (CI4.20 A 2,28 A
27, The number of stereoisomcrs for CHD=CH-eH=ClID is
4 8 2
28. The entropy ehange associated with the expan,ion of one mole of an ideal gas from an initial volume of V to a final volume of 2.50 V al eonstant temperature is gas eon,rant)

AS In 2,50 AS =-2.50Rln


AS 2.50 R In (VrNi) AS R In 2.50


29. The smallest among the following integrnls is

IJ.-"tfx
oo o
30, The quaternary structure of human hemoglobin is a

dimer of two myoglobin dim.,...


tetramer of identical subunits.


tetramer of four different subunits,


tetramer of two different subunits,


31. The number of isomm having non-zero dipole moment for PCI,F, in the trigonal
bipyramidal geometry is

7

V-II

32. The most appropriate reagent for the conversion ofRCOOMe into RCH,OH is
NaBli< LiBIi< NoH PdIC and
33. Which of the following statements must be lrUe for the entropy of a pure solid to be zero?

The temperatW"C must be 0 K.


The solid must be crystalline, not amorphous.
The solid must be perfectly ordered.



Thc solid must be an element


nand ill I and n I illand IV


34. The function with exactly two minima and one maximum, among the following is
x
35. Collagen is

an a-helical structural protein.


a coiled-coil protein found in hair.


a cross-linked globular protein.


a triple-belical fibrous protein.


36. Given that 18F undergoes 90 radioactive decay in 366 min., the half life for "F is
220 min. 34?3 min. 154 min. J10 min.
37. The phenolic compound among the following is:
Ibubrufen Paracetamol Penicillin Camphor
38. What is the hydroxide ion concentration of a solution that bas a pH of 11.20?
M J1.20 M 1.58)(10" M 2.80 M
39. For all values of x which determinant among the following is zero? x

r

I
8

V.... II

40. The conductivity of sodium dodecyl sulfate solution exhibits a sIwp transition
around 8 mM concentration. This is because:

SOS precipitates beyood 8 roM concentration.


SOS forms micelles above 8 roM concentration.


SOS fonns a gel above 8 roM concentration.


SOS undergoes hydrolysis above 8 roM concentration.


41. According to the equation 2 Fe'· 2C • 2 Fe'·
how many grams of iodine can be produced by rcacling 7.4 mots of Fe3+ and 7.0 mols
ofr? [AL WL ofiodine is 127]

g g g 17.8>< g
42. The most appropriate spectroscopy for the identification of a nitrile group is
JR NMR UV ESR
43. If the uniL. for rate arc M wbat arc the units for the rate eonSlml1, for a zeroth· order ncaction?

44. The function with a finite range is
." ."
45. How many grams of copper will be produced when 27 g of aluminium is added to eacess cupric sulpbate solution? [At. wts.; AI Co =63.5]
63.50 90.50 95.25 122.25
46. The two strands of double helical ONA arc associated by bydrogen bonds between adenine and thymine and between guanine and cytoSine The numbers of hydrogen bonds between A-T and O-C pairs, ncspectivcly arc:
one, two two, two two, thnce three, two
9
V.-II

47. The intermediate involved in Curtius reammgcmeot is
C8JbcDjum ion carbaninn
(Cl nilmle cll!beoe

48. An organic compound on decomposition at 500'C aod 1 atm. pressure released 2 mL each of carbon monoxide, nitrogen aod water vapour. The empirical formula of the molecule is (A)CHNO CH,NO
d
49. -explt'j
dt
lit' exp(r)
2lcxp(r) (l12l)exp(r)
SO. Nessler's reagent is prepared by mixing a solution of KI with a solution of aod then adding KOH solution. is
Zoel, HgCl, A1CI, (O)TiC4
51. The intennediate acid involved in the following reaction i.
6


NH,coNH,
uric acid cyaouric acid thiocyaoic acid cyaoic acid
52. SO mL of 0.04 M HCl solution was mixed with SO mL of 0.02 M AgNQ, solotion, stined aod filtered. The pH of the filtered solution is
I 2 3
53. i. equal to







10
V,... II

54. Whicb of the following fluorides is angular?
BeP2 ZnF2 SoP, (O)XeF2
55. The more reactive dienopbile among the following for the reaction with cyclopentadiene is


-rx
o
56. The magnetic quantum number of the last electron in the atom with atomic number 21 is
I
57. If the number e91 is marked as a point on the complex plane. wbat is the distance of the poin, from the origin?
I
58. What is the electronic configuration ofy3+?
[Kr)3d2 [KrJ
59. The bybridization that is common for leas' onc of the carbon a'oms in bydrogen cyanide. carbon disulfide. allene and carbon monoxide is
sp Sp2 dsp'
60. Whicb one among the given functions bas the smallest slope at x
U-3 U-I U-2r
II
61. The order of basicity of the following substituted anilines is

0" 0

6" OoNVNOz Y

• IV
>ID>ll
(ClJV>ll>I>ID
62. According to crystal field theory. the electron of the metal centre in square planar [Cu(NH,l.l" resides in
d., (O)d..
63. The rotation of pure R(+)-Limonene is +123.0". Calculate the of the isomer in a sample showing a rotation of +109
8.6 77.2 94.3 82.9
64. An ideal gas undergocs isothennal and reversible expansion from its initial volume to some final volume at 300 K drawing in 90 kJ of beal. The cbange in the Gibbs free energy of the gas is
300 J ISO J 0 J -300 J
I
I.
o
0 <10 .!.
2

66. An extensive property of a themJodynamic system among the following is
Pressure Temperature Volume Concentratioo
12

V-II

67. The product obtained in the foUowing lIm1sfonnation is BH,·THF
t10 •



68. The number of unpaired electrons in the complex ion is in the order

NiC4'" CoC4'"


NiC4'­


ZnC4'" CuC4'"


ZnC4'" CoC4'­


69. If =..r. then lim
.­
0
70. The metal ion involved in the water oxidation process al the active site of ph010System
Ilis
Fe
71.
The oxidation number of carbon in dimethyl ether is 1

72.
The complex number in polar form is given by



13

73. Compound I gives a S1roIIg infrared absorptioo at 1730 em'l. IH NMR spectnun
indicaICS that it has two types of hydrogen atoms; one H atom oppearing as singlet at
=9.7 ppm and 9 H IllOm5 eppearing as a singlet at 1.2 ppm. The structure of! is 9H•


(CH.

Hsc"'CHO
74. In 0 titration experiment, the end point indicates

neutralization point completion of pn:cipitation


IIpplItent equivalence point exact equivalence point


7S. The structures I and n. shown below, correspond 10:
H Co. pOOH



OH
H
In


S·loctic acid and S·a1anine R·lactic acid and R·a1anine


R·lactic acid and S·a1anine S·lactic acid and R·a1anine


76. The heat of reaction of both the reactions 2 KOH H.SO, ..... K.SO, 2H,o and Mg(OHl:z H.SO, MgSO, H,O is -27.2 !<caUmo!. Hence the heat of reaction of 3 ea(OHl:z 2 6 H,O would be

-13.6 kcaVmol -27.2 kcaVmol


-81.6 kcaVmol -{i8.0 kcaVmol


77. The standard equation of a circle passing through the points u v and w is
100 100
100 100
14
v-II

78. Acid is used in the Slllndardizalion tilrBlioo of KMnO. against sodium oxalate because helps in dissolving KMnO•.

it stabilizes pcn1l8lIganote ion.


it faciliwes the reduction of Mn7. to Mn'·.
helps in dissolving the MoO, formed during titration.



79. Which of the following covalent compounds does nOl have any formally charged atom?
CHoN, CH,ONO CH,CNO
80. The two radial nodes in the 3s radial function of H atom occur at the distan<:es Rl and R2 from the nucleus. The au.e radial nodes in the 4s orbital occur at R3, R4 and RS. The order of these distances is given by
R3< RI<R4<R2<RS <R2<RS
RI <R2<R4<RS R3<RI <R4 <R5<R2
81. Th. graph ofth. equation if-2y)-29 represents a
parabola ellipse eirele hyperbola
R2. Using Wad.'s rul. predict the structure ofB,Ho (A)closo nido amcbno scorpionato
83. In the SNI solvolysis of the following primary alkyl chlorides in aqueous ethanol, th. onler ofdecreasing reactivity is

II >III >IV II I III >IV


IV >III >II ill II IV


15
V-II

84. A solutiOll of sulfutic acid contains 86 g of per liter of soIutiOll. The normality of the solution is
1.8 N (B)0.9N (C)2.0N 1.0 N
8S. The equation of the normal line to y 4 at is
I9


42 9 1

24
86. Which one of the following statements do not apply to inlCrhalogen compounds?

Could be neulnll Could be cationic


Could be anionic Always obey octet rule.


87. The product obtained by the reaction of one equivalent of I-bromo-3-<:h10r0cyelobutane and two equivalents of Na is:




!OJ


88. Whicb of the following pair has the lowest interfacial tension?

n-decanelwater n-butanelwater


airlwater n-<3Ctyl alcohollwater


89. The gas pressure in an aerosol container i. 1.5 atm at 2S·C. AssUD2ing an ideal behavior of the gas, ifthe container is heated to the pressure would be close to
1.023 abn 1.234 atm 3.639 atm 2.639 atm
16

Booklet code A
90. The order of in=asing dipole moment among H.S. H.o and BF, is •

BF, H.S H.O H.o H>S BF,


H>S H.O BF, BF, H.o H>S


91. The best method for the foUowing transformation is


acid mediated hydration hydroboration-oxidation


oxymercuration-dcmcn:uration ozonolysis-tcduction


92. The concenlnUion of Ba'· in saturated BaSO. solution a127"C is 1.04 x 10" M. What is the 50Iuhility product for BaSO, at this temperature?

1.04 x HT'o M 1.08 x 10.10 M


0.52 X HT'o M 2.08x 10" M


93. What is the hybridization of sulfur in SF.?
sp'd
94. The cslcr that undergoes acid hydrolysis most readily is
Me Me

I .... I ....

A OMe A Br

Me
I .... A NO.
95. If the balf-lifc of a reaction is independenl of its initial concenlnUion, then the reaction
may be categorized as
zeroth order fint order
secood order bimolecular

17


Y.-I

96. How many milliliters of 2 M NaCI solution are required to make one litle of0.4 M NaCI solution by adding water?
5000 mI goo ml (C)200ml 20 mI
97. Which of the foUowing compounds is aromatic?

CBH

98. A 0.01 M solution of a compound transmits 20 of visible light when the absorbing path length is J.5 cm. What is the molar extinction C<Hlfficient of the substance? Solvent is assumed to be cnmpletely transparent.
46.6 M"'cm" 50.3 M"'cm" 22.3 M"'cm" 43.6 M"'cm"
99.
Which of the following atoms has the highest number of unpaired electrons in its ground state? 0

100.
Which of the foUowing compounds has the highest boiling point?



Mesitylene Benzene


Toluene Cycloh••ane


18 V.-I