Chemistry Test Series IV

8/10/2019 Chemistry Test Series IV

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2

Part-A

1. What is the remainder when 163+ 173+ 183+ 193 is divided by 70?

(a) 0 (b) 1 (c) 69 (d) None of these

2. What is the remainder when 1527+ 2327is divided by 19?

(a) 12 (b) 5 (c) 0 (d) 1

3. Begin write positive integers (in decimal notation) sequenctly what is the 1000th digit written?

(a) 0 (b) 1 (c) 6 (d) None of these

4. A king ordered that a golden crown be made from him from 8kg of gold and 2kg of silver. The goldsmithtook away some amount of gold and replaced it by an equal amount of silver and the crown when made,weighed 10 kg. The king knew that under water gold lost 1/20thof its weight while silver lost 1/10th. Whencrown was weighed under water, it was 9.25 kg. How much gold was stolen by the goldsmith

(a) 0.5kg (b) 1kg (c) 2kg (d) 3kg

5. There are two candles of equal length and of different thickness. The thicker one lasts for 6 hours. Thethinner one lasts two hour less than the thicker one. Radha lights the two candles at the same time whenshe went to bed, she saw the thicker one is twice the length of the thinner one. How long ago did Radhalight the two candles?

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

6. Rishabh and Richa solved a quadratic equation. In solving it, Rishabh made a mistake in the constant termand got the roots as 6 and 2. While Richa made a mistake in the coefficient ofxonly and obtained theroots as 7 and 1. The correct roots are

(a) 6, 7 (b) 6, 1 (c) 7, 1 (d) 2, 7

7. Manufacturer of a tennis ball anounced that their new ball is best in the market. If one were drop it fromany height, it would only rise to the extent of 10% of the height from which it was dropped. If the ball wasdropped 45 feet, how much would the ball travel before coming to rest.

(a) 45 ft (b) 50 ft (c) 55 ft (d) 49.5 ft

8. From a leaking tab a drop come out in b minutes. If there are c drops in a liter, then in how manyhours one liter of water will be wasted

(a) 60 a/bc (b) a/bc (c) abc/60 (d) bc/60a

9. Fresh grapes contain 68% water and dry grapes contain 20% water. How much fresh grapes are requiredto obtained 80kg of dry grapes

(a) 100 kg (b) 200 kg (c) 300 kg (d) 400 kg

10. The value of54log16

(a) 16 (b) 5 (c) 25 (d) 4

11. Given that ( ) | | /f y y y and qis an non-zero real number. The value of | ( ) ( ) |f q f q is

(a) 0 (b) 1 (c) 1 (d) 2


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Part-B

21. Which molecule is inactive for rotational spectrum?(a) SF

4(b) BrF

3(c) Ozone (d) Tetrachloroethylene

22. The ESR spectrum of methoxymethyl radical will appear as(a) A triplet of quartets (b) A triplet of quentets(c) A quartet of quartets (d) A doublet of quartets

23. The point group of the given molecules (consider them rigid in lowest energy conformation)

Bicyclo[1.1.1]pentane

AB

(a) C3v and C

2v respectively (b) D

3h and D

2h respectively

(c) D3d and D

2d respectively (d) C

3h and C

2h respectively

24. Suppose we put a delta function bump in the centre of infinite square well

1 aH x2

where is constant

Then first order correction to the second excited state is:

(a) 0 (b)2

a(c)

2

a

(d)

a

225. The standard entropy of the molecules CH

2Cl

2(g), CHCl

3(g) and CH

3Cl(g) is in increasing order is

(a)0 0 0CH Cl CHCl CH Cl2 2 3 3

S S S (b) 0 0 0CH Cl CH Cl CHCl2 2 3 3S S S

(c)

0 0 0

CH Cl CH Cl CHCl3 2 2 3

S S S (d)

0 0 0

CH Cl CH Cl CHCl3 2 2 3

S S S

26. The molar enthalpy of combustion of isobutane and n butane are 2869 kJ/mole and 2877 kJ/mole respec-

tively at 298K and 1atm. The H for conversion of 1 mole of n butane to one mole of isobutane

(a)8kJ

mole (b)

8kJ

mole

(c)

2877kJ

mole

(d)

2869kJ

mole

27. For CH3I molecule the moment of inertia xx yy zzI , I , I are related by

(a) xx yy zzI I I (b) xx yy zzI I I (c) xx yy zzI I I (d) xx yy zzI I I

28. The minimum potential difference needed to reduce Al2O3at 500C. The free energy for the decompositionreaction

2 3 2

2 4Al O Al O G 965 kJ

3 3

is(a) 2.5 (b) 3.3 (c) 1.6 (d) 4.3

29. In metal carbonyls, the metal and CO orbitals which overlap one another to form a -bond are respectively

(a) andd (b) andnb nb (c) d p (d)*andd

30. Which of the following complexes has higher value of CFSE excluding pairing energy?(a)

3

2 6Mn H O

(b)

3

2 6Co H O

(c)

2

2 6Ni H O

(d)

3

6Fe CN


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31. Arrange the following ligands in the increasing order of acceptor ability?(a) Phen < CO < R

3P < CN< NO (b) Phen < NO < R

3P < CN< CO

(c) Phen < R3P < CN< CO < NO (d) R

3P < Phen < CN< CO < NO

32. Which of the following complexes is the strongest reducing agent?

(a) 2

3 4Cu NH

(b)

2

3 6Co NH

(c)

4

6Co CN

(d)

3

2 6Co H O

33. Which of the following peptides is formed when Ala-Ser-Thr-Lys-Gly-Arg-Gly is treated with trypsin?(a) Ala-Ser-Thr-Lys (b) Ala-Ser-Thr (c) Arg-Ser-Gly-Ala (d) Ala-Ser-Thr-Lys-Gly

34. The enzyme nitrogenase catalyze the activation and reduction of dinotrogen to ammonia, the nitrogenase arecomposed of two metalloproproteins which are commonly referred to as the Fe protein and the MFe (M =Mo, V and Fe) co-factor. The Fe-protein commonly in the nitrogenase is(a) Fe

2S

2(b) Fe

4S

4(c) dimer of Fe

4S

4(d) Fe

3S

4

35. The blue-colour of copper blue protein is caused by(a) LMCT (b) MLCT (c) d-d transition (d) MM charge transfer

36. Which one of the following amino acids liberates ammonia on mild hydrolysis and then yields a different aminoacid(a) Tyrosine (b) Alanine (c) Asparagine (d) Hydroxyproline

37.OH

COOH

NH2

NaOH

cbz-Cl (A)Imidazole

TBDMS-Cl(B)

(i) LiAlH4

(ii)

O, H+

(C)

The major product C in the above reaction sequence is

(a)

NHCbz

OTBDMSOO

(b)

OCbz OTBDMS

NHTHP

(c)

TBDMSO OTHP

NHCbz

(d)

OTHP OTHP

NHTBMS

38.

NPh

Ph

Ph

MeOOC

OH

O

HCOOH

THF/H2O(A)

H2/Pdc (B)

The major product B in the above synthetic transformation is:


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(a) MeOOC

NH2

OH

(b)

HN

Ph

Ph

MeOOC

OH

HO

(c) MeOOC

NH2

OH

(d) MeOOC

NH2

OH

39. The correct relation between compound (A) and (B) are

HO

OH

OH

H

O O

H

OH

OH

OH

(A) (B)

(a) Identical (b) diastereomers (c) enantiomers (d) Homomers40. The major product P in the following reaction is

(OC)5W

Ph

OMe

BBr3P

(a) (OC)4(Br3B)WPh

OMe

(b) (OC)4WPh

BBr2

(c) (OC)5W C Ph

Br

(d) (OC)4(Br)W Ph41. Which of the following sandwich compound is diamagnetic in their ground state.

(a) Cp2V (b) Cp

2Cr (c) Cp

2Mn (d) Cp

2Fe

42.

O

hv

O

The above reaction takes place via(a) Norish type-I (b) Peterno bucchi (c) Norish type-II (d) di-pi methane rearrangement


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43.

ClBr

Ag+, H2OP

The major product P is:

(a)

OH

Cl

(b)

Br

(c)

Br

OH

(d)

Cl

OH

44.

Me

Et

A

170C

P

The product P is

(a)

Me Et

(b)

Me Et

(c) both (a) and (b) (d)

Et Me

45. Which of the following compound is aromatic

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

46.

O

O

(i) PhMgBr

(ii) H+P

The major product P in the following reaction is

(a)

Ph

O

(b)

Ph

OH

(c)

Ph

O

(d)

Ph

O

47. When a mixture of acetaldehyde and excess HCHO is heated with alkali which of the following product isproduced

(a) H3C CH2 OH (b) CHO (c) C(CH2OH)4 (d) (H3C)2C CH2 OH

H


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58. Consider the equilibrium, 3A B 2C D

At equilibrium, the concentrations of A, B and C were observed 0.03, 0.01 and 0.006 molelitre1respectively.The initial concentration of A would have been(a) 0.003 (b) 0.001 (c) 0.009 (d) 0.039

59.

Cl

Cl ClI II III

Above molecules undergo reaction in the presence of base. Rate of reaction follows the order(a) I > II > III (b) III > II > I (c) II > III > I (d) II > I > III

60. C

CH3

H3C OH

Et

BF3

NaCN*

(a)C

CH3

H3C CN

Et

* (b)C

CH3

H3C

NCEt*

(c) both (a) and (b) (d) None of the above

61.

H

EtH3C

Ph

Cl

Et H

D

*

NH2/

(a)

Et

H3C Ph

CH(CH3)(Et)

*

(b)H3C

Et Ph

CH(CH3)(Et)*

(c)Et

D Ph

CH(CH3)(Et)*

(d)D

Et Ph

CH(CH3)(Et)*

62.

O

KH/H2O

O

H

(a)

O OH

(b)

O

CH3HO

(c)

O

Me

OH

(d)

O

HO Me


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63.

O

D Ph

H2SO4

(a)

OH

D

Ph

(b)

OH

Ph

(c)

OH

D

Ph(d)

OH

H

Ph

64. Which of following ion has highest magnetic moment?

(a) 3Er (b) 3Ho (c)3Tb (d) 3Eu

65. Volume of water needed to mix 10 ml, 10N HNO3to get 0.1 N HNO

3?

(a) 990 ml (b) 1020 ml (c) 1010 ml (d) 100066. The increasing order of acidic strength of following acids

HNO3, HBr, H

2SO

4, HCl, HClO

4in water

(a) 4 2 4 3HClO HBr H SO HCl HNO (b) 3 4 2 4HNO HCl HClO H SO HBr

(c) 4 2 4 3HClO H SO HBr HCl HNO (d) None of the above

67. If fundamental vibrational frequency of F2is 2.6761013Hz, find out the vibrational partition function for F

2at

25C(a) 2.31 (b) 1.03 (c) 3.01 (d) 3.21

68. Consider the followingList-I List-II

Order of reaction Half life time

(A) 2 (i)0.693

k

(B) 1 (ii)a

2k

(C) 3 (iii)1

ak

(D) 0 (iv) 23

2a k

The correct match of the half lives with the order of reaction will be(a) A-(iii), B-(iv), C-(i), D-(ii) (b) A-(iii), B-(i), C-(iv), D-(ii)(c) A-(iv), B-(i), C-(ii), D-(iii) (d) A-(iv), B-(i), C-(iii), D-(ii)


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69. For the reaction P Q R S , experimental data for the measured initial rates is given below..

15

4

3

5

Initial rateInitial conc. P Initial conc. Q Initial conc. RExpt.

M M M Ms

1 0.2 0.5 0.4 8.0 10

2 0.4 0.5 0.4 3.2 10

3 0.4 2.0 0.4 1.28 10

4 0.1 0.25 1.6 4.0 10

The order of the reaction with respect to P, Q and R respectively is:(a) 2 2, 1 (b) 2, 1, 2 (c) 2, 1, 1 (d) 1, 1, 2

70. In an NMR experiment, the relative population difference N/N for 13C nuclei in the magnetic fields of (a)0.5 T, (b) 2.5 T and (c) 15.0T at a temperature of 298K are in the ratio:(a) 1 : 5 : 30 (b) e1: e5: e30

(c) e0.5/298: e2.5/298: e15/298 (d) 30 : 5 : 1

Part-C

71. Treatment of the unsaturated acid A with the reagents shown gives an unstable compound B which is convertedinto stable compound C by treatment with base. The spectral data for compound C are as follows: IR: 1775,1645 cm-1; H NMR: 4.18 (2H, s), 5.00 (2H, s), 6.18 (1H, s).

What are the structures of B and C?

Me

MeCO2H

Br2

(PhCO2)2A

C5H6Br2O2

B

baseC5H5BrO2

C

(a)

Br

Br COOH

O

O

Br

And (b)

Br

COOH

O

O

Br

And

(c)

Br

COOHO

OBr

And

Br

Br (d)

Br

COOHO

O

And

72. A compound used as a moth repellant has three molecular ion peaks at m/z =146 (100%), 148 (65%) & 150(10%) amu in its mass spectrum. A pair of smaller peaks are seen at m/z=111 (34%) & 113 (11%). Theinfrared spectrum shows sharp absorption just above 3000 cm-1region, and also at 1480 cm-1. The 1H nmr

shows a single sharp signal at = 7.2 ppm, and the 13C nmr has two signals ( =133 & 130 ppm ).

(a)

F

F

F

CH3

(b)

F

(c)

Cl

Cl

(d)

Cl

Cl


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73. Which is the incorrect irreducible representation for D3h

point group?

3h 3 2 h 3 vD E 2C 3C 2S 3

a 1 1 1 1 1 1

b 2 1 0 2 1 0

c 1 1 1 1 1 1

d 2 1 0 2 1 0

74. The Mullikan symbols for the correct irreducible representations in Q.73 are

(a) 1 2A' , A ' and E' respectively (b) 2 1A ' , E" and A ' respectively

(c) 2 1A ' , E ' and A" respectively (d) 1E ', A " and E "respectively

75. The activity of liquid water at 9.3 bar pressure and TR is

[Given R = 0.083 litre bar/k-mole, TR= room temperature]

(a) 18/TRe (b) 18/TRe (c) 1.8/TRe (d) 1.8/TRe

76. The wavefunction corresponding to energy = 0.618 of Butadiene. According to the Huckel orbital theory

is(a) 1 2 3 40.3717 2pz 0.6015 2pz 0.6015 2pz 0.317 2pz

(b) 1 2 3 40.6015 2pz 0.3717 2pz 0.3717 2pz 0.6015 2pz

(c) 1 2 3 40.6015 2pz 0.3717 2pz 0.3717 2pz 0.6015 2 pz

(d) 1 2 3 40.3717 2pz 0.6015 2pz 0.6015 2pz 0.3717 2pz

77. The value commutator [H, x] for the quantum mechanical hamiltonian 2p

H V x is2m

dxx '

dt

(a)

x '

i

(b)

4 x '

i

(c)

2 x '

i

(d)

x '

2i

78. An electron of energy 1 eV is moving along the x-axis where it encounters a 0.2 nm long region. Providing apotential of 4.8 eV. The potential is zero everywhere else. The probability that the electron will go through this

region of higher potential is: (Given that for electron2

3 238 10 eV nm2m

(a) e1 (b) e2 (c) e3 (d) e4

79. The frequencies of the first few vibronic transition to an excited electronic states are

Vibronic transition 1obs / cm

0 0 39699.10 cm1

0 1 40786.8 cm1

0 2 41858.9 cm1

The value of e is

(a) 1103.3 cm1 (b) 2103.3 cm1 (b) 2206.6 cm1 (d) 4206.6 cm1

80. The EMF of concentration cell without EMF is

4 4 1 4 2 4Cd | CdSO s | PbSO a | Pb | PbSO a | CdSO s | Cd

(a) 1

2

aRTE lnF a

(b) 2

1

aRT lnF a

(c) 1

2

a2RT lnF a

(d) 2

1

a2RT lnF a


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81. The electron transfer reaction in the following reaction takes place via

2 3 2 2

3 2 2 25 6 56Co NH Fe CN H O Co H O Fe CN H O

(a) Inner sphere mechanism (b) Inner sphere mechanism without ligand transfor(c) Outer sphere mechanism (d) Either inner sphere or outer sphere mechanism

82. Which of the following substances show substaintal Jahn Teller distortion

(a) 2 2

2 2 26 6Cr H O , Cu H O , MnF

(b) 2 2

2 2 26 6Cr H O , Cu H O , CrF

(c) 2 2 2

2 2 26 6 6Mn H O , Cr H O , Cu H O

(d) 2 2 2

2 2 26 6 6Ni H O , Cr H O , Cu H O

83. Which of the following pairs of complexes shows labile and inert complexes respectively

(a) 3 2

2 26 6Co H O and Cu H O

(b) 3 3

2 26 6Cr H O and Co H O

(c) 2 3

2 26 6Co H O and Co H O

(d)

3 2

2 26 6Ti H O and Cr H O

84. Lowest energy transition for 3

6CrF

is

(a) 3 32g 2gT A (b)3 3

2g 1gT T (c)4 4

2g 1gA T (d)4 4

2g 2gT A

85. Consider the following statement about carbohydrates(1) Br

2/H

2O can be used to differentiate from a ketone

(2) All monosaccharides, whether aldose or ketose are reducing sugars(3) Osazone formation destroys the configuration about C2 of an aldose, but does not affect the configuration

of the rest molecules.(4) A pair of diastereomeric aldose with differ only in configuration about C2 is termed as pair of anomers.Which of the above statements are correct(a) 1, 3 and 4 (b) 2 and 4 (c) 1 and 4 (d) 1, 2 and 3

86. Which of the following statements about hemoglobin is not true(a) There is a H-bonding between an imidazole NH of a histidine and bound O

2group.

(b) In the deoxy form, the Fe(II) atom is in the high spin state and less about 0.5 out of the heme plane in thedirection of the histidine group.

(c) The dioxygen unit is bound in a bent fashion similar to the2

superoxo type.(d) Hemoglobin an 2 2 heterotetramer that binds O2co-operatively, is found in red blood cells.

87.HO CH2 (CH2)4

O

H Br2/H2O(A)

HIO4(B)

The major product B in the above reaction sequence is

(a) 3HCHO 3HCOOH CH COOH (b) 23HCHO 2HCOOH CO

(c) HCHO 3HCOOH OHC COOH (d) 4HCOOH OHC COOH


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88. Ph N

O

O

O

1. NaHMDS

or LDA

SPh

O O

N

O

Ph

3. LiOH/H2O2

2.

(P)

The major product P in the above reaction is

(a) Ph OH

O

NH2

(b) Ph OH

O

OH

(c)

Ph OH

O

NO PhS

O

O

Ph

(d) Ph OH

O

OH

89.

HO

HO

N

NHI

O

O

CO2Me

cat. Pd(OAc)2Ph3P, Et3Ndioxane, 85C, 3h

(P)LiAlH478C

Q

The major product in the above reactions

(a)

HO

HO

N

NH

O

O

HO

(b)

HO

HO

N

NH

O

O

HO

(c)

O

O

N

NHI

O

O

H3C

H3C

(d)

O

O

N

NHI

O

H3

C

H3C


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90. Consider the potential energy diagram for reaction about the C(2)C

(3)bond in n-butane

0.6 kcal/mole

b

a c

d

e

3.4

f

6.9 kcal/mole

0 60 120 180 240 300 360

P.E.

Torsion angle (degrees)

The energy difference between partically eclipsed and skew conformation in kcal/mole is(a) 2.8 (b) 2.9 (c) 3 (d) 5.4

91. When Fe(CO)5is refluxed with cyclopentadiene compound (A) is formed which has the empirical formula

C8H

6O

3Fe and complicated 1H NMR spectrum has been observed. The compound A readily loses CO to

give compound B with two 1H NMR spectrum, one at negative chemical shift and one at around 5ppm,

subsequent heating of B results in the loss of H2and the formation of a new compound C. Compound C hassingle 1H NMR resonance and the empirical formula C

7H

5O

2Fe compound A C obeys the 18 electron

rule.Consider the above statements and data, which of the following statement is/are true about the compounds

A C

(a) Compound A has Cp in 3 -mode and no MH bond

(b) Compound B has Cp in 3 mode and having MH bond.

(c) Compound C has two MM bond and two Cp in 5 mode.

(d) Compound A has Cp in 3 mode and having MH bond.

92. The major product P in the given reaction is CF INa Hg 32 8Co CO O P

(a) 34Co CO CF (b) 35Co CO CF

(c) 4Co CO F (d) 4Co CO I

93. O

CH3

hvP

The major product P is:

(a) OH (b)O

(c)O

(d)OH


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94. + Cl2HC C

O

Cl(i) Et3N,

(ii) Zn/CH3COOHP

The product P is

(a)

Cl Cl

O

(b) O (c)

O

Cl

(d)

O

ClCl

95.O

(i) MeLI

(ii) PCCP

The major product P is

(a)

Me

O

(b)

O

Me

(c)

O

Me

(d) No reaction

96. The major product formed in the following reaction sequence is

1. m-CPBA

2. BF3.Et2OP

(a)

OH

(b)

OH

(c)

O

(d)

O

97. , unsaturated curboxlic acid X with I2and NaHCO

3gives

O

OH

X

(a)

O

I

(b)

I

O

O

(c)

I

O

O

(d)

O

O

I

98. The oxidising power of per halates follows the order

(a) 4 4 4ClO BrO IO (b) 4 4 4ClO BrO IO

(c) 4 4 4ClO BrO IO (d) 4 4 4ClO IO BrO

99. Which one of the following bonds pattern is present in silicones

(a) Si O Si O Si (b) Si C Si C Si C (c) Si C Si O Si (d) Si Si Si Si


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100. The first ionization potential in electron volts of nitrogen and oxygen atom are respectively given by(a) 14.6, 13.6 (b) 13.6, 14.6 (c) 13.6, 13.6 (d) 14.6, 14.6

101. In a sample of pitchblende the ratio of 206 238Pb : U 0.3 :1 by weight. If the distintegration constant of U238is1.331010per year and all Pb is supposed to be originated from uranium, the age of the mineral would be

(a) 91.35 10 yrs (b) 94.12 10 yrs (c) 92.24 10 yrs (d) 96.14 10 yrs

102. When X-rays from a palladium target having a wavelength of 58.1 pm are used, the (200) reflection of sodiumchloride occurs at an angle of 6.80. The density of sodium chloride is (Given: sin 6.80 ]= 0.1184)(a) 3.999 g cm3 (b) 3.288 gcm3 (c) 3.999103kg cm3 (d) 3.288103kg m3

103. Consider a polymer sample with

Number of molecules Mass

10 1000

50 2000

40 5000

The polydispersity index (P.D.I) of the sample is

(a)3121 10

31 (b)

331 10121

(c)1210

961(d) None of these

104. In langmuir adsorption of a gas onto a solid surface the values of slope and intercept were found to be 40 pacm3and 4 cm3respectively. The value of distribution coefficient is:(a) 0.5 Pascal (b) 0.1 Pascal (c) 0.5 Pascal1 (d) 0.1 Pascal1

105. The decomposit ion of PCl5into PCl

3and chlorine gas can be represented by the equilibrium

5 3 2PCl g PCl g Cl g

For this equilibrium, the value of the equilibrium constant Kp was found to be Kp = 0.404. If the total pressure

at equilibrium was found to be 3.0 atm, the volume per cent of chlorine at equilibrium will be(a) 25.5% (b) 33.3% (c) 45% (d) 47%

106. The degree of dissociation of acetic acid in a 0.1 M solution is 1.11102. The Ka value of the acid is(a) 1.2459105 (b) 3.2459105 (c) 12.459105 (d) 5.2459105.

107.

OTs

OH

EtH

H3C CH3

NaN3

(a)

H

Et

CH3

HO

H3C N3

(b)

CH3

Et

CH3

HO

H N3

(c)

H

CH3

Et

HO

H3C N3

(d)

CH3

CH3

Et

HO

H N3


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108.

O

OEt

+NO2

(i) NaOEt

(ii) Zn/AcOHIntermediate

[I]P

I and P are

(a)

O

OEt

and

O

OEt

NH2

(b) N

O

O

and

O

NH2

(c)

O

OEt

and

O

OEt

NH2

(d) N

O

O

and

O

OEt

NH2

109.

OTs

O

NH2NH2

P-TsOH(A) (B)KOH

A and B are

(a)

OTs

NNH2

and

(b)

NNH2

O

andO

(c)

OTs

NNH2

and

OTs

(d)

NNH2

O

and

O


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19

110. H

O

CH3

O

PhEtO P

O

OEt

CH2 CF3

NaH

(a)H

CH3

HF3C

Ph

CF3H(b)

H

CH3

HF3C

Ph

O

(c) H

O

CH3

Ph

HF3C(d)

H

CH3

Ph

HF3C

CF3H

111.

O

+

O

HPhKH

(a)

O H

CH3

and Ph

OH

CH3

O

ReRe

(b)

O H

CH3

and Ph

OH

CH3

O

ReSi

(c)

O CH3

H

and Ph

OH

CH3

O

ReRe

(d)

O CH3

H

andPh

OH

CH3

O

ReSi


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20

112.conc. HNO3

Conc. H2SO4

(a)

NO2

(b)

NO2

(c)NO2

(d)

NO2

113. Ion exchange methods which of following pair undergo elution first?

(a) 3 3Ce , Pr (b) 3 3Sm , Gd (c) 3 3Lu , Tm (d) 3 3Dy , Ho

114. Proton affinity of compounds are given

Proton Affinity 1HOO

PA 1573 kJ mol

2 1PAO 1476 kJ mol 1

CH O3PA 159 kJ mol

The correct order of acidity

(a) 3 2 2 2CH OH H O H O

(b) 2 2 2 3H O H O CH OH (c) on the basis of PA of ions acidic strength can not be determined.

(d) 3 2 2 2CH OH H O H O (since it is an exceptional case)

115. A system consisting of 7 atoms of A and 5 atoms of B. If two identical containers having same system asdescribed, are joined together, the total partition function of the combined system ca be given as

(a)

7 5A B4075q q

7 5(b)

7 5A B4035q q

7 5(c)

7 5A B35 q q

7 5(d)

7 5A B4096q q

7 5

116. For the reversible reaction, k1

k2

X Y

t 0 a 0

t t a x x

the integrated rate law is given by

(I) k k t1 2

2 1t1 2

1X a k k e

k k

(II) k k t1 2

1 2t1 2

1X a k k e

k k

(III) k k t1 2

2 1t

1 2

1X a k k e

k k

(IV) k k t1 2

1 2t

2 1

1X a k k e

k k

(a) I only (b) III only (c) II and IV (d) All are correct.


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21

117. For the enzyme catalysis, Michaelis-Menten suggested the following, mechanism'1

1

k

kE S ES

"1kES P E

with 2.9102sec1as the rate constant for the product formation, 2.4101sec1as the rate constant forthe dissociation of the enzyme substrate complex into enzyme & substrate and 5.5101mol1ltr sec1as

the rate constant for the formation of the enzyme substrate complex.The value of the Michaelis-Menten constant (in mol ltr1) will be(a) 0.2724 (b) 0.4890 (c) 0.7729 (d) None of these

118. Given that the information that

2 0

0

2 0

Cu 2e Cu E 0.35

Cu e Cu E 0.52

Cu Cl e CuCl E 0.54

The value of Ksp

for CuCl is

(a) 10+6

(b) 106

(c) 1.6107

(d) 1.6107

119. The formula for the standard deviation for a set of small sample of n measurements is

(a)

1N 2

2

ii 1

x

N 1

(b)

1

N 22

ii 1

x x

N 1

(c)

1N 2

ii 1

x

N N 1

(d)

1N 2

2

ii 1

x

N N 1

120. A system consists of gaseous H2, O

2, H

2O and CO

2where the amount of CO

2is specified and the equilibrium

constant for the reaction 2 2 22H g O g 2H O g is known. The number of degrees of freedom ofthe system is

(a) 2 (b) 3 (c) 4 (d) 5


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H O 28 A/11 Ji S i N IIT N D lhi 16 Ph 011 26851008 26861009 d

22

Chemical Sciences Test Series-IV

ANSWER KEY

PART-A

1. (a) 2. (c) 3. (d) 4. (d) 5. (c) 6. (c) 7. (c)

8. (a) 9. (b) 10. (c) 11. (d) 12. (d) 13. (c) 14. (c)

15. (d) 16. (b) 17. (b) 18. (b) 19. (c) 20. (b)

PART-B

21. (d) 22. (a) 23. (b) 24. (c) 25. (c) 26. (b) 27. (b)

28. (a) 29. (d) 30. (b) 31. (c) 32. (c) 33. (a) 34. (c)

35. (a) 36. (c) 37. (c) 38. (c) 39. (c) 40. (d) 41. (d)

42. (a) 43. (c) 44. (c) 45. (b) 46. (a) 47. (c) 48. (d)

49. (b) 50. (b) 51. (b) 52. (b) 53. (d) 54. (d) 55. (c)

56. (b) 57. (d) 58. (d) 59. (c) 60. (c) 61. (b) 62. (d)

63. (a) 64. (b) 65. (a) 66. (d) 67. (b) 68. (b) 69. (c)

70. (a)

PART-C

71. (a) 72. (c) 73. (d) 74. (c) 75. (a) 76. (b) 77. (a)

78. (d) 79. (a) 80. (b) 81. (c) 82. (b) 83. (c) 84. (d)

85. (d) 86. (c) 87. (c) 88. (b) 89. (a) 90. (a) 91. (d)

92. (d) 93. (b) 94. (b) 95. (a) 96. (d) 97. (d) 98. (b)

99. (a) 100. (a) 101. (c) 102. (d) 103. (c) 104. (b) 105. (a)

106. (c) 107. (c) 108. (b) 109. (a) 110. (a) 111. (c) 112. (a)

113. (c) 114. (b) 115. (d) 116. (a) 117. (b) 118. (b) 119. (b)

120. (b)

Date: 07-12-2013

Chemistry Test Series IV

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Chemistry Test Series IV