Exam Details

Subject chemistry
Paper
Exam / Course combined competitive examination
Department
Organization Jammu Kashmir Public Service Commission
Position
Exam Date 2013
City, State jammu kashmir,


Question Paper

EIJ-49853-A 1 [Turn over
ROUGH WORK

1. Cerium is a member of

s-block element f-block element


d-block element p-block element


2. The element with electronic configuration 1s2, 2s2 2p6, 3s2 is a/an

Metal Non Metal


Metalloid Inert gas


3. Which of the following has Noble gas configuration

La2+ Ce3+


Ce4+ Eu2+


4. Nobelium with atomic number 102 has the electronic configuration

5f 7 6d7 7s2 5f 10 6d4 7s2


5f 14 6d1 7s1 5f 14 6d0 7s2


5. Elements of the same group are characterised by

Ionization potential


Electron affinity


Same number of electrons in the outer most shell


Electronegativity


6. Zr and Hf have similar atomic and ionic radii because of

Diagonal relationship Lanthanide contraction


Both in the same period Similar chemical properties


7. Which of the given elements has the highest second ionization potential


8. The attraction of an atom for electrons in a bonded molecule is called

Ionization potential Oxidation potential


Electron affinity Electronegativity


9. Deuterium atom is an of hydrogen atom.

Isotope Isobar


Isotone Isomer


10. Complete the reaction scheme
94 12
Be +He . C ......... choosing one of the following

42 6
11
n
10
20
e
1
Ca40
11. An isobar of 20 is
K42
Ar38

19

Ca38 Ar40


18


12. Which of the following complexes is most stable



[M(bipyridine)3(D) [M(pyridine)6
13. Which of the following is non polar covalent molecule

All CO2


CCl4 SiF4


14. The strong forces operating in diamond structure are

Hydrophobic Covalent


Ionic Coordinate Covalent


15. The central atom in H2O molecule undergoes the hybridization

sp sp2


dp2 sp3


16. In regular trigonal bipyramidal structure the bond angles are

180o and 60o 60o and 60o


72o and 90o 120o and 90o


17. The hybridization of Tellurium in TeCl4 molecule is

sp3 sp3d


dsp2 d2sp3


18. The longest C-H bond distance is in the following molecule

CHBr


CH


22 222
26 24
19. Oxidation state of of oxygen is observed in
F2O H2O
OF
(C)H2O2 22
20. In the reduction of Cr2O72- by the number of electrons involved per atom of chromium is


21. The oxidation state of Iron in Fe(CO)5 molecule is


22. During oxidation process electrons are

lost gained


paired up remains same


High temperature
23. BH+ 2 NH ...... gives the product as
26 3

Boron nitrate Borazole


Boric acid Borax


24. Which is the correct order of decreasing acid strength halogen group from Cl to I
HClO HBrO HIO (B) HBrO
333 333
HBrO HClO HIO (D) HIO HClO HBrO
333 333
25. Which of the following is soluble in excess of NaOH

Ni(OH)2 Fe(OH)3


Cr(OH)3 Al(OH)3



26. What is the 10 Dq value of complex
120 12

27. Which of the 0.1 M aqueous solution will have the lowest freezing point

C5H10O5 KI


CHO


2 43 122211
28. Silver metal dissolves in a solution of sodium cyanide in the presence of air to form the complex

AgCN


AgCl


29. The process of heating the concentrated ore in a limited supply of air or in the absence of air is known as

Roasting Leaching


Calcination Cupellation


30. If the principal quantum number n the magnetic quantum number m can take on values


31. Which of the following is pella magnetic in low spin state

Co2+ Fe2+


Ni2+ Co3+


32. [Co(NH)Cl]NO and are isomers of
34 22342

Coordination


Geometrical


33. K3[Al(C2O4)3] is called by its IUPAC name as

Potassium trioxalatoaluminate


Potassium trioxalatealumininate


34. What is the structure of IF7

Trigonal bipyramidal


Pentagonal bipyramidal



35. The EAN of [Ni(NH3)6 is

34


36



Optical


Ionization


Potassium trioxalatoaluminium


Potassium Aluminum Oxalate


Square pyramidal


Trigonal planar


38


40


36. How many number of chlorides will be precipitated when a solution of [Co(NH3)Cl]Cl2 will react with an excess of silver nitrate


37. Which of the following red substances turns black on heating and restores its colour on cooling
FeO (B) PbO
34 34
Na2CrO4 NaClO4
38. Which of the halogens will form most hexahalide with sulphur

(D)Br
39. [Pt(NH3)2Cl2] exhibits the isomerism called

Cis-trans Linkage


Ionization Coordination position


40. When a reagent is added to an aqueous solution FeCl3 it gives

Blood red colouration Apple green colouration


Blue colour precipitate Red precipitate


41. Paul-Knorr synthesis of Pyrroles involves the reaction of NH3 with

2-Dicarbonyl Compounds 3-Dicarbonyl Compounds


4-Dicarbonyl Compounds 5-Dicarbonyl Compounds


42. Which one of the following is the major product in the nitration of Naphthalene

2-NO2 naphthalene 3-NO2 naphthalene


6-NO2 naphthalene 1-NO2 naphthalene


43. HS CH2 CH CO2H
NH2
What is the name of this compound


Serine Alanine


Cysteine Glycine


44. Which one of the following Vitamins is essential for coagulation of Blood

(D)B1
45. Identify the heterocyclic ring containing amino acid from the following

Valine Histidine


Leucine Phenylalanine


3
46.
. z

z in the above reaction is
CF3
CF3
BF
3 NO
2
CF

3 CF
3

2 NO2

47.

This conformation of cyclohexane is called as

Twist boat Deformed chair


Chair Boat


48. Identify Thiosemicarbazide from the following
HN-SH HN-C-NH-NH
2
S
H-C-NH-NH2 H2N-C-NH-NH2
OO
49. Ethylmethylamine exhibits which one of the following

Enantiomerism Diastereomerism


Dynamic enantiomerism Geometric isomerism


50. Methyl-a-D-glucoside and Methyl-ß-D-glucoside represent

Epimers Homomers


Atropisomers Anomers


51. What is the source of UV radiation

Hydrogen gas discharge lamp RF oscillator


Klystron oscillator Nernst Filament


52. Which transitions are studied by UV spectrometer

Rotational Electronic


Nuclear Vibrational


53. One nm is equal to

10-5 cm 10-6 cm


10-7 cm 10-8 cm


54. The structure of sulphur dioxide molecule may be given as

Tetrahedral


Linear


55. Identify the preferred solvent for recording

CDCl3


H3C-C-CH3


O



Bent


Plane triangle



H-NMR spectrum from the following

C6H6


CHCl3


56. In H-NMR the aldehydic proton resonates at d value of

1.80 2.50


9.80 7.20


57. Which conformation of n-butane has the lowest potential energy

Eclipsed Partially eclipsed


Gauche Anti


58. An SN1 reaction results in

Retention Racemisation


Inversion Elimination


59. Among the following which alcohol is most reactive with a hydrogen halide

Ethyl t-Butyl


Benzyl Isopropyl


H2
60. H3C C CH2 CH3Lindlar catalyst. z Structure of z is

H3C CH CH CH2 CH3


H3C CH2 CH CH CH3


HC CH CH CH CH


H2C CH CH2 CH2 CH3


32223
61. Oxidation of 3-pentanol yields

Diethyl ketone Acetone


Methyl ethyl ketone Acetone Acetic acid


62. What is the order of a base catalyzed bimolecular elimination reaction of an alkyl halide

First order Pseudo first order


Second order Zero order


63. Identify the product in the addition reaction of HBr to propene in the presence of peroxide

2-Bromopropane 1-Bromopropane


2-Dibromopropane 1-Dibromopropane


1. O3
64. 3-Hexene .product(s)
2. H2O/Zn
What are the products in the above reaction

Acetaldehyde Butanal Formaldehyde Pentanal


Acetone Butanal Propanal Propanal


CO2H
H
OH
65.
H
OH
1
2


CO2H
The configuration of this compound is

1R, 2S 1S, 2R


1R, 2R 1S, 2S


AlCl 3
66. 3CH +CCl ..Y
..
66 4
Structure of Y is
CHCCl (B) CHCHCl
653 652
(CH)CH
653 653

CH3
CHCl2
Cl .CaCO3
2
67. HO.z
hv
2
Br Br
Identify z from the following

CH2OH
CHO

Br Br
HO

OH
CH2CH2OH
CH

Br
Br
68. Which one of the following does not give an Iodoform test

Ph CH2 CH2 OH Ph CH CH3

OH


HC CH CH HC CH OH


323 32

OH
69. Identify succinic acid from the following

CO2H
COH
2
CH
2 (CH2)3
CO2H CO2H
CO2H
CO2H

22
24
CO2H CO2H
O


70. H5C2 O C O C2H5. This structure represents which one of the following

Carbonyl compound Alkoxide


Ester Diether


O



OH.
71. Ph C CH3 Ph CHO z Structure of z is

Ph CO2H Ph CH2OH


Ph C CH CH C Ph Ph CH CH C Ph


OO O
72. The specis formed during the Hofman rearrangement is

R C N2+ RNCO

O



R C N3 RCNO



O

73. Which alkyl halide is most reactive in aliphatic SN2 reaction

R I R Br


R Cl R F


CHO
74. Y H2C CH CHO . What is Y in the above reaction
HC CH (B) HC CH CH CH
22 22
H2C CH CH CH CH3

75. An alkaline solution of cupric ion complexed with tartarate ion is known as

Tollen's reagent Benedict's reagent


Fehling's reagent Bayer's reagent



76. HN CH CH CH COH .
.. product
22| 22
CH3

CH3H3C



HN



NH
O
O

CH3

CH3



NH
NH
O O

77. Identify the n .p* band of a

C Oin the UV spectrum from the following

300 200


250 150


78. Appearence of two bands in the region of 3500 3300cm-1 in IR spectrum is due to which one of the following groups

NH2 N
H



SH Cl


79. Identify the Fundamental NMR equation from the following
.B1tp e.l.c
HV
o -. E

2 p
80. Magnetic anisotropy is shown by which one of the following

CH4 CH3 CH2 OH


H3C CH2 CH2 Cl



81. Average kinetic energy per molecule is 3
RT
2
1 1
kT RT
2 2
82. Rootmean square speed of gas molecule is

3RT M
3RT
8RT
N M
83. For one mole of gas CP and CV relations are
C (B)C C R
P V PV
CP CV R CP CV·R
84. The compressibility factor for ideal gas is

Zero 1


1 1


85. The units of van der Waal's constant are

Moles/lit Atm litre2 mol-2


lit/mol atmospheres


86. The value of PCVC/RTC is

8.314 0.375


2.000 0.082


87. Half-life period is not effected by changing concentration of reactants in the reaction of

First order Second order


Zero order 0.5 order


88. Which of the following is not true for zero order reactions

Rate Rate constant


Rate is independent of concentrations


Rate does not change with time


Rate increase with increase in concentrations


89. The half-life of first order reaction is 0.1 sec. The rate constant is

6.93 sec 0.0693 sec-1


69.3 sec 6.93 sec-1


90. The units of rate of zero order reaction is

Sec-1 Mol lit-1


Mol lit-1 sec-1 Mol lit-1 sec


91. The rate constant for first order reaction is 0.01 sec-1. If the initial concentration of reactant A is 0.1 the initial rate is

1 × 10-2 1 × 10-3


0.1 1.1 × 10-2


92. The pH of 0.05M H2SO4 solution is
2.70 5.20
1.00 2.05
93. The dissociation constant of weak acid HA is 1 × 10-3 and its concentration is 0.1 M. The pH of solution is


94. The units of molar conductance are
S-1 2

Sm2 mol-1 m m M-1


S mol m2 S-1 mol M


95. Which of the following ions has highest ionic mobility

OH Li


Cs H


96. The cell in which electrical energy is converted to chemical energy is

Galvanic cell Voltaiccell


Electrolytic cell Electrochemical cell


97. The standard reduction potentials of Zn2+/Zn and Cu2+/Cu are 0.76v and 0.34v respectively. The Eo of cell Zn Zn2+(0.1M) Cu2+(0.1M) Cu is

0.42v 1.10v


1.10v 0.42v


98. Arrhenius theory of electrolytic conduction does not apply to

HCN NH4OH


CH3COOH KCl


99. Under Isobaric conditions the heat absorbed by the system qp is given by

qp .H qp .E


qp .E .V qp .E P.V


100. CP and CV relation for He gas is

CP CV CP CV


CP CV R CP CV 2R


101. In isothermal expansion of gases, which of the following is zero

q (heat absorbed) W


. E .V


102. Which of the following gases warmed up in adiabatic expansion

O2 N2


Ne H2


103. The .E and .H relation for the reaction C6H6( l 7½ . 6 CO2 3 H2O( l is

.H .E 1.5 RT .H .E 1.5 RT


.H .E ½ RT .H .E


104. Which of the following is true for spontaneous process

.G ve .G ve


.G 0 .G .S .H 0


105. The number of degrees of freedom at triple point in H2O system are


106. The phase rule for condensed systems (Ex Pb-Ag System) at constant P is

F C P 2 F C P 1


F C P 3 F C P 1


107. Gels are

solids dispersed in solid solids dispersed in gas


solids dispersed in liquid Liquids dispersed in solids


108. Highest flocculation value exhibited for Fe(OH)3 solution is

KCl K2Cr2O4


BaCl2


109. Tyndall effect is shown by

Ideal solutions AgCl suspension


Starch solution K2Cr2O7 solution


110. A catalyst is

Consumed in reaction Produced in reaction


Not affected in reaction Undergoes chemical change


111. In an auto catalytic reaction, the rate of reaction

Increase with time Not affected with time


Decrease with time Can't be predicted


112. Pb(C2H5)4 in petrol acts as

Catalyst Promoter


Activator Inhibitor


113. The distribution coefficient expression for distribution of Benzoic acid in Benzene and water is obtained experimentally as K
C C the molecular state of Benzoic acid is
Benzene Water

Dimer in Benzene Monomer in Benzene


Dissociated in Benzene Dimer in Water


114. At equilibrium the free energy change is

0 ve


ve infinity


115. According to Lechateliar principle the reaction in the 2 NO2(g)

2NO2(g) heat equilibrium the forward reaction is favoured when

High T and High P Low T and Low P


Low T and High P High T only


116. Which of the following is not colligative property

Relative lowering of VP Elevation of BP


Osmotic pressure Freezing point


117. Which of the following solution has largest osmotic pressure

0.1M Glucose 0.11M Urea


0.1M BaCl2 0.1 M KCl


118. Two isotonic solutions will have same

Vapour pressure Boiling point


Freezing point Osmotic pressure


119. A non-volatile solid is added to water. Its freezing point will

Increase Decrease


No change Can't be predicted


120. Sea water can be converted into fresh water by

Osmosis Sedimentation


Diffusion Reverse Osmosis


ROUGH WORK

ROUGH WORK

ROUGH WORK


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