CUSAT CAT 2018 Question Paper Chemistry

Subject Code : 604 Section Code : -Select- Difficulty: 1

Subject Answer
Q Id Questions
Code Key

Hybridizations of atomic orbitals of N-atom in NO2+, NO3– and NH4+ ions are

(A) sp 2, sp and sp 3 respectively

604 1051 (B) sp, sp 2 and sp 3 respectively (B)

(C) sp, sp 3 and sp 2 respectively

(D) sp 2, sp 3 and sp respectively

Which of the following molecules has the highest bond order?

(A) O2+

604 1052 (B) O2 (A)

(C) O2–

(D) O22–

The structure and hybridization of Si(CH3)4 are

(A) trigonal, sp 2

604 1053 (B) bent, sp (D)

(C) octahedral, sp 3 d

(D) tetrahedral, sp 3

Among the following ions the pπ - dπ overlap could be present in

(A) CO32–

604 1054 (B) NO3– (C)

(C) PO43–

(D) NO2–

Which of the following two are iso structural?

(A) XeF2, IF2–

604 1055 (B) PCl5, ICl5 (A)

(C) CO32–, SO32–

(D) NH3, BF3

Hydrogen bond is strongest in

(A) F-H....O

604 1056 (B) O-H....S (D)

(C) S-H....O

(D) F-H....F

604 1057 (C)

Among the compounds BF3, NCl3, H2S, SF4 and BeCl2, identify the ones in which the central atom has the
same type of hybridization.

(A) H2S and BeCl2

(B) BF3, NCl3 and H2S

(C) NCl3 and H2S

(D) SF4 and BeCl2

H-O-H bond angle in H2O is 104.50 and not 1090 28’ because of

(A) lone pair-lone pair repulsion

604 1058 (B) lone pair-bond pair repulsion (A)

(C) bond pair-bond pair repulsion

(D) high electronegativity of oxygen

Which one of the following sequences represents the increasing order of the polarizing power of the cationic
species, K+, Ca+, Mg2+, Be2+

(A) Mg2+ < Be2+ < K+ < Ca+
604 1059 (C)
(B) Be2+ < K+ < Ca+ < Mg2+

(C) K+ < Ca+ < Mg2+ < Be2+

(D) Ca+ < Mg2+ < Be2+ < K+

Which one of the following pairs of species have the same bond order?

(A) CN– and NO+

604 1060 (B) CN– and CN+ (A)

(C) NO+ and CN+

(D) O2– and CN–

Which are the coloured ions? 1) Ti4+ 2) Cu+ 3) Co2+ 4) Fe2+

(A) 1, 2, 3, 4

604 1061 (B) 3, 4 (B)

(C) 2, 3

(D) 1, 2

In the manufacture of iron from haematite the limestone acts as

(A) gangue

604 1062 (B) flux (B)

(C) slag

(D) reducing agent

Extraction for zinc from zinc blende is achieved by

(A) electrolytic reduction

604 1063 (B) roasting followed by reduction with carbon (B)

(C) roasting followed by reduction with another metal

(D) roasting followed by self-reduction

604 1064 The number of moles of KMnO4 that will be needed to react with one mole of sulphite ion in acidic solution is (C)

(A)

(B)

(C)

(D)

Amongst Ni(CO)4, [Ni(CN)4]2– and [NiCl4]2–

(A) Ni(CO)4 and [NiCl4]2– are diamagnetic and [Ni(CN)4]2– is paramagnetic

604 1065 (B) [NiCl4]2– and [Ni (CN)4]2– are diamagnetic and Ni(CO)4 is paramagnetic (C)

(C) (CO)4 and [Ni (CN)4]2– are diamagnetic and [NiCl4]2– is paramagnetic

(D) Ni(CO)4 is diamagnetic [NiCl4]2– and [Ni (CN)4]2– are paramagnetic

In nitroprusside ion, iron and NO exist as Fe(II) and NO+ rather than Fe(III) and NO. These forms can be
differentiated by

(A) measuring the concentration of CN-
604 1066 (C)
(B) estimating the concentration of iron

(C) measuring the solid state magnetic moment

(D) thermally decomposing the compound

Which one of the following complexes will have four isomers (where en=ethylenediamine)?

(A) [Co(PPh)3(NH3)2Cl2]Cl

604 1067 (B) [Co(en)(NH3)2Cl2]Cl (D)

(C) [Co(en)3]Cl3

(D) [Co(en)2Cl2]Br

According to postulates of Werner theory for co-ordination compounds,

(A) primary valency is ionizable

604 1068 (B) secondary valency is ionizable (A)

(C) primary and secondary valencies are non-ionizable

(D) only primary valency is non-ionizable

Among the following, the most stable complex is

(A) [Fe(CN)6]3–

604 1069 (B) Fe(H2O6)]3+ (C)

(C) [Fe(C2O4)3)]3–

(D) [FeCl6]3–

604 1070 The complex used as an anticancer agent is (B)

(A) Na2CoCl4

(B) cis- [PtCl2(NH3)2]

(C) cis-K2 [PtCl2Br2]

(D) mer-[Co(NH)3Cl3]

The spin magnetic moment of cobalt in the compound Hg[Co(SCN)4] is

(A)

604 1071 (B) (C)

(C)

(D)

Which one of the following is an inner orbital complex as well as diamagnetic in behavior?

(A) [Cr(NH3)6]3+

604 1072 (B) [Ni(NH3)6]2+ (D)

(C) [Zn(NH3)6]2+

(D) [Co(NH3)6]3+

In Fe(CO)5, the Fe-C bond possesses

(A) ) π-character only

604 1073 (B) Ionic character (C)

(C) Both σ and π characters

(D) σ character only

Which of the following complex ions is expected to absorb visible light?

(A) [Sc(H2O)3(NH3)3]3+

604 1074 (B) [Ti(en)2(NH3)2]4+ (C)

(C) [Cr(NH3)6]3+

(D) [Zn(NH3)6]2+

On heating ammonium dichromate, the gas evolved is

(A) ammonia

604 1075 (B) oxygen (D)

(C) nitrous oxide

(D) nitrogen

[B5H5]2–, B5H9 and B5H11 are the examples of

(A) closo, nido and arachno boranes respectively
604 1076 (B) nido, closo and arachno boranes respectively (A)

(C) arachno, nido and closo boranes respectively

(D) closo, arachno and nido boranes respectively

604 1077 Diagonal relationship is not shown by (C)

(A) Be and Al

(B) B and Si

(C) C and P

(D) Li and Mg

Water gas is a mixture of

(A) H2O and CO

604 1078 (B) CO and H2 (B)

(C) H2 and H2O

(D) CO and N2

Which of the following is more polarizable?

(A) Na+

604 1079 (B) Cs+ (D)

(C) F–

(D) I–

The colour of gemstone, Ruby red, is due to the replacements of Al3+ in octahedral site by

(A) Cr3+

604 1080 (B) Fe2+ (A)

(C) Ti4+

(D) Fe3+

Fe3+ forms a high-spin octahedral complex; then its magnetic moment is

(A) 5.92 BM

604 1081 (B) 0 BM (A)

(C) 1.72 BM

(D) None of the above

The magnitude of Δ0 value will depend upon

(A) charge of the central metal ion

604 1082 (B) nature of the ligand (D)

(C) principal quantum number of the d-electron

(D) All of the above

E p for Co3+ is 250 KJ mole–I and Δ0 for the complex ion [Co(CN)6]3– is 345 KJ mole-I. Then the complex ion
is

(A) paramagnetic
604 1083 (B)
(B) diamagnetic

(C) ferromagnetic

(D) None of the above

604 1084 CFSE for a high-spin system is zero. Its electronic distribution is (D)

(A) ( t 2g)4 ( e g)0

(B) ( t 2g)6 ( e g)3

(C) ( t 2g)4 ( e g)2

(D) ( t 2g)3 ( e g)2

Generally step-wise stability constants gradually decrease. This general trend is due to

(A) statistical factor

604 1085 (B) steric factor (D)

(C) electrostatic factor

(D) All of the above

Successive stability constants of ‘en’ complexes with a metal ion are: log K1= 2.5, log K2= 1.7 and log K3 =
0.8. Therefore, the over-all stability constant is

(A) 5
604 1086 (C)
(B) 104.2

(C) 105

(D) None of the above

An antidote used in mercury poisoning is

(A) Cis-platin

604 1087 (B) Calomel (C)

(C) EDTA

(D) None of the above

Among the following, the most stable complex is

(A) [Co(en)(H2O)4]3+

604 1088 (B) [Co(en)2(H2O)2]3+ (D)

(C) [Co(NH3)6]3+

(D) [Co(en)3]3+

The metal present in vitamin B12 is

(A) cobalt

604 1089 (B) manganese (A)

(C) iron

(D) magnesium

[Pt(NH3)4]2+ on treatment with Cl– gives a product of composition, [PtCl2(NH3)2]. It is a

(A) trans-isomer
604 1090 (B) cis-isomer (A)

(C) mixture of cis- trans-isomer

(D) None of the above

604 1091 The metal carbonyl that does not obey the EAN rule is (B)

(A) Ni(CO)4

(B) V(CO)6

(C) Cr(CO)6

(D) All of the above

Mond’s process makes use of the formation of

(A) Ni(CO)4

604 1092 (B) Ni(CO)5 (A)

(C) Cr(CO)6

(D) None of the above

Vaska’s complex is

(A) [Pt(Cl)(CO)(PPh3)2]

604 1093 (B) [Ir(Cl)(CO)(PPh3)2] (B)

(C) [Ir(Cl)(CO)(PEt3)2]

(D) [Pt(CO)(Cl)(PEt3)2

Wilkinson’s catalyst is

(A) ) [RhCl(PPh3)3]

604 1094 (B) [Rh(PPh3)3]Cl (A)

(C) [RhCl (PEt3)3]

(D) None of the above

The increasing order of splitting of d orbitals in distorted octahedral field is

(A) t2, e

604 1095 (B) t2g, eg (C)

(C) dxz, dyz, dxy, dz2, dx2–y2

(D) dxz, dyz, dz2, dxy, dx2–y2

In Irving-Williams series the stability of complexes with a given ligand is in the order

(A) Mn2+ < Fe2+ < Co2+ < Ni2+ < Cu2+

604 1096 (B) Mn2+ > Fe2+ > Co2+ > Ni2+ > Cu2+ (A)

(C) Cu2+ > Ni2+ > Fe2+ > Mn2+ > Co2+

(D) Cu2+ < Ni2+ < Fe2+ < Mn2+ < Co2+

604 1097 (A)

(A) a-q, b-r, c-s, d-p

(B) a-q, b-s, c-p, d-q

(C) a-r, b-p, c-s, d-q

(D) a-p, b-q, c-s, d-r

The shape of IF5 molecule is

(A) pentagonal bipyramidal

604 1098 (B) square pyramidal (B)

(C) octahedral

(D) trigonal planar

Which of the following molecules has trigonal planar geometry?

(A) IF3

604 1099 (B) PCl3 (D)

(C) NH3

(D) BF3

Number of lone pairs of electrons on Xe atoms in XeF2, XeF4 and XeF6 molecules are respectively

(A) 3, 2 and 1

604 1100 (B) 4, 3 and 2 (A)

(C) 2, 3 and 1

(D) 3, 2 and 0

Dimethyl terephthalate and ethylene glycol react to form

(A) nylon-66

604 1101 (B) nylon-6 (D)

(C) neoprene

(D) Dacron

The standard employed in Proton NMR spectroscopy is

(A) CDCl3

604 1102 (B) DMSO-Cl6 (D)

(C) Tetra ethyl lead

(D) TMS

C6H14 has how many structural isomers

(A) 4

604 1103 (B) 5 (B)

(C) 6

(D) 7

604 1104 The enolic form of acetone contains (A)

(A) 9 sigma bonds, 1 pi bond and 2 lone pairs

(B) 8 sigma bonds, 2 pi bond and 2 lone pairs

(C) 10 sigma bonds, 1 pi bond and 1 lone pair

(D) 9 sigma bonds, 2 pi bond and 1 lone pair

Anti-Markownikov‘s addition of HBr is not observed in

(A) Propene

604 1105 (B) But-1-ene (C)

(C) But-2-ene

(D) Pent-2-ene

Power alcohol is a mixture of petrol and alcohol in the ratio of

(A) 4:1

604 1106 (B) 1:4 (A)

(C) 2:1

(D) 1:2

When ethyl iodide is treated with dry silver oxide it forms

(A) ethyl alcohol

604 1107 (B) diethyl ether (B)

(C) silver chloride

(D) ethyl methyl ether

Hoffmann’s bromamide reaction converts

(A) amide to alcohol

604 1108 (B) cyanide to amide (C)

(C) amide to lower amine

(D) aldehyde to ketone

Isopropyl chloride undergoes hydrolysis by

(A) SN1 mechanism

604 1109 (B) SN2 mechanism (C)

(C) SN1 and SN2 mechanism

(D) neither SN1 and SN2 mechanism

Which one of the following methods is used to convert ketone into hydrocarbons?

(A) aldol condensation

604 1110 (B) Reimer Tiemann Reaction (D)

(C) Cannizzaro Reaction

(D) Wolf-Kishner reduction

604 1111 Grignard reagent on reaction with elemental sulphur followed by acidification gives (D)

(A) Sulphuric acid

(B) Isothiocyanate

(C) thioether

(D) Mercaptan

The major Organic compound formed by the reaction of 1,1,1-Trichloroethane with silver powder is

(A) 2-Butene

604 1112 (B) Acetylene (D)

(C) Ethene

(D) 2-Butyne

(A) Acetyl Chloride

604 1113 (B) Acetaldehyde (D)

(C) Acetylene

(D) Ethylene.

An aromatic compound ‘A’(C7H9N) on reacting with NaNO2/HCl at 0�C forms benzyl alcohol and nitrogen
gas. The number of isomers possible for the compound ‘A’ is

(A) 3
604 1114 (C)
(B) 6

(C) 5

(D) 7

Which of the following will have a meso-isomer also?

(A) 2-Chlorobutane

604 1115 (B) 2,3-Dichlorobutane (B)

(C) 2,3-Dichloropentane

(D) 2-hydroxypropanoic acid

Arrange p-toluidine(I) N,N-dimethyl-p-toluidine(II) p-nitroaniline(III) and aniline(IV) in order of decreasing
basicity

(A) I > IV > III > II
604 1116 (C)
(B) I > II > III > IV

(C) II > I > IV > III

(D) III > I > II > IV

(A) 1,2

604 1117 (B) 1,3 (D)

(C) 1,2,3

(D) 2,3

604 1118 A Compound X(C5H8) reacts with ammonical AgNO3 to give a white precipitate and an oxidation with hot (C)
alkaline KMnO4 gives the acid, (CH3)2CHCOOH. Therefore X is

(A) CH2=CHCH=CHCH3

(B) CH3(CH2)2C≡CH

(C) (CH3)2CH-C≡CH

(D) (CH3)2C=C=CH2

Among the following statements on the nitration of aromatic compounds, the false one is

(A) The rate of nitration of benzene is almost the same as that of hexadeuterobenzene

604 1119 (B) The rate of nitration of toluene is greater than that of benzene (A)

(C) The rate of nitration of benzene is greater than that of hexadeuterobenzene

(D) Nitration is an electrophilic substitution reaction

Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces

(A) 4-Phenylcyclopentene

604 1120 (B) 2-Phenylcyclopentene (D)

(C) 1-Phenylcyclopentene

(D) 3-Phenylcyclopentene

Hydroboration followed by Oxidation of 2-Methylpropene gives

(A) 2-Methyl-2-propanol

604 1121 (B) 1,2,3-Propanetriol (C)

(C) 2-Methyl-1-propanol

(D) 1,2-Popanediol

The IUPAC name of Cl3CCH2CHO is

(A) Chloral

604 1122 (B) 1,1,1-Trichloropropanal (D)

(C) 2,2,2-Trichloropropanal

(D) 3,3,3-Trichloropropanal

Total number of isomeric alcohols with formula C4H10O are

(A) 1

604 1123 (B) 2 (D)

(C) 3

(D) 4

Which of the following pairs show isomerism?

(A) CH4 and C2H6

604 1124 (B) CHCl3and CCl4 (C)

(C) CH3CH2OH and CH3OCH3

(D) NaCl and NaOH

Which of the following compounds can exhibit tautomerism?

(A) Benzaldehyde

604 1125 (B) Acetophenone (B)

(C) Nitrobenzene

(D) 2-Aminopropane

604 1126 Which has smallest heat of hydrogenation/mol? (A)

(A) But-1-ene

(B) Cis-2-butene

(C) Trans-2-butene

(D) 1,3-Butadiene

An enantiomerically pure acid is treated with racemic mixture of an alcohol having one chiral carbon. The ester
formed will be

(A) Optically active mixture
604 1127 (A)
(B) Pure enantiomer

(C) Meso Compound

(D) Racemic Mixture

Which of the following does not undergo SN2 reaction?

(A) Vinyl halide
604 1128 (B) Allyl halide (D)

(C) Chlorobenzene

(D) All of the above

Acetaldehyde is the rearrangement product of

(A) Methyl Alcohol

604 1129 (B) Allyl Alcohol (C)

(C) Vinyl Alcohol

(D) All of the above

The state of hybridization of carbon in triplet carbon is

(A) sp3

604 1130 (B) sp2 (C)

(C) sp

(D) None of the above

Among the following the aromatic compound is

(A) Cylopropenyl cation

604 1131 (B) Cyclopentadienyl cation (A)

(C) Cyclobutadiene

(D) Cyclopropenyl anion

During AgNO3 test for detection of halogens, sodium extract is boiled with few drops of conc.HNO3 to
decompose

(A) NaCN
604 1132 (C)
(B) Na2S

(C) Both (A) and (B)

(D) None of the above

604 1133 Sprayer used in the detection of amino acid is (D)

(A) iodine

(B) Benedicts solution

(C) Fehling’s solution

(D) Ninhydrin solution

The reaction between 2-Methyl-1,3-butadiene and ethylene is called as

(A) Michael addition

604 1134 (B) Diels-Alder reaction (B)

(C) Wolf-Kishner reaction

(D) None of the above

The most strained cycloalkane is

(A) Cyclopropane

604 1135 (B) Cyclobutane (A)

(C) Cyclopentane

(D) Cyclohexane

Toluene can be converted into Benzaldehyde by oxidation with

(A) KMnO4/alkali

604 1136 (B) CrO2Cl2 (B)

(C) K2Cr2O7/K2SO4

(D) O2/V2O5

Which of the following will react with sodium metal?

(A) Ethene

604 1137 (B) Propyne (B)

(C) But-2-yne

(D) Ethane

The reagents required to obtain 1-iodobutane from but-1-ene is/are

(A) I2/red P

604 1138 (B) KI (D)

(C) HI/H2O2

(D) HBr/H2O2 and KI/acetone

In the SN2 reaction of cis-3-methylcyclopentyl bromide with alkali, the product formed is

(A) A cis-alcohol
604 1139 (B) A trans-alcohol (B)

(C) An equi molecular mixture of cis and trans alcohol

(D) There is no reaction

604 1140 The action of Chloral on Chlorobenzene gives (B)

(A) BHC

(B) DDT

(C) Gammaxene

(D) Lindane

(A) C2H5Cl

604 1141 (B) C2H5ONa (B)

(C) CH2N2

(D) CH3ONa

Aryl halides are less reactive towards nucleophile than alkylhalides due to

(A) Resonance

604 1142 (B) Stability of Carbonium ion (D)

(C) High Boiling point

(D) None of the above

By Wurtz reaction, a mixture of methyl iodide and ethyl iodide gives

(A) Butane

604 1143 (B) Ethane (D)

(C) Propane

(D) A mixture of the above three

Complete hydrolysis of cellulose gives

(A) D-Fructose

604 1144 (B) D-ribose (C)

(C) D-glucose

(D) L-glucose

The prosthetic group of haemoglobin is

(A) Prophin

604 1145 (B) Globulin (C)

(C) Haem

(D) Gelatin

Which base is present in RNA but not in DNA?

(A) Uracil

604 1146 (B) Cytosine (A)

(C) Guanine

(D) Thymine

604 1147 Night blindness may be caused by the deficiency of vitamin (A)

(A) A

(B) B

(C) D

(D) C

The chemical name of vitamin C is

(A) Nicotinic acid

604 1148 (B) Folic acid (D)

(C) Tartaric acid

(D) Ascorbic acid

Which of the following contains cobalt?

(A) Vitamin A

604 1149 (B) Vitamin C (C)

(C) Vitamin B12

(D) Vitamin K

Excess of sodium ions in our body system causes

(A) High BP

604 1150 (B) Low BP (A)

(C) Diabetes

(D) Anemia

Which of the following polymer is used for making films and frames?

(A) Polyethalene

604 1151 (B) Polyvinylchloride (C)

(C) Polystyrene

(D) Polymethyl Methacrylate

The number average molecular weight is given by

(A)

(B)

604 1152 (A)

(C)

(D)

Which one of the following is always true for spontaneous change at all the temperatures?

(A) ΔH>0; ΔS<0

604 1153 (B) ΔH <0; ΔS<0 (C)

(C) ΔH<0; ΔS>0

(D) ΔH>0; ΔS>0

604 1154 The degree of dissociation of 0.01 M acetic acid solution is found to be 0.05 at 25oC and the molar conductance (B)

of acetic acid at infinite dilution is 390 � 10–4 S m2 mol–1 at 25oC. The specific conductance is

(A) 1.95 x 10–4 S m2 mol–1

(B) 19.5 x 10–4 S m2 mol–1

(C) 0.78 x 10–4 S m2 mol–1

(D) 0.78 S m2 mol–1

(A)

(B)
604 1155 (C)

(C)

(D)

Polymers which having regular alternation of d- and l- configurations in a molecular Chains

(A) Syndiotactic polymers

604 1156 (B) Atactic polymers (A)

(C) Isotacic polymers

(D) Stereoregular polymers

(A) 0.5 x 10–3 mol L–1 min–1
604 1157 (B)
(B) 5 x 10–3 mol L–1 min–1

(C) 10 x 10–3 mol L–1 min–1

(D) 0.1 x 10–3 mol L–1 min–1

Which of the following is used as a fuel in fuel cells?

(A) Hydrogen

604 1158 (B) Nitrogen (D)

(C) Methane

(D) Both A and C

What is effect of adding nitrogen to the following equilibrium N2+3H2�2NH3

(A) Equilibrium shifts towards left

604 1159 (B) Equilibrium shifts towards right (B)

(C) Equilibrium does not alter

(D) None of the above

604 1160 The Gibb’s energy for the reaction at 27o C whose equilibrium constant K=10 (A)

(A) –5.73kJ

(B) –57.3 kJ

(C) –0.573kJ

(D) –573 kJ

Consider the reaction at equilibrium 2SO2+O2�2SO3 ,ΔH= –ve, the procedure which yields formation of more
SO2

(A) Addition of O2
604 1161 (A)
(B) Addition of SO3

(C) Increase of pressure at constant temperature.

(D) Decrease in temperature at constant pressure

A process in which no heat enters or leaves the system is called

(A) Isothermal

604 1162 (B) Isobaric (C)

(C) Adiabatic

(D) Isochoric

Which one of the following is always true for adiabatic expansion of ideal gas?

(A) Temperature rises

604 1163 (B) ΔH=0 (C)

(C) q=0

(D) W=0

An endothermic reaction A � B proceeds spontaneously. Which of the following is correct for the reaction?

(A) ΔS is positive and TΔS> ΔH

604 1164 (B) ΔH is positive and ΔH>T ΔS (A)

(C) ΔS is negative and TΔS> ΔH

(D) ΔG and ΔH both are negative

In a reaction, A + B → Product, rate is doubled when the concentration of B is doubled, and rate increases by a
factor of 8 when the concentrations of both the reactants (A and B) are doubled, rate law for the reaction can be
written as

(A) Rate = k[A]2[B]2
604 1165 (D)
(B) Rate = k[A][B]2

(C) Rate = k[A] [B]

(D) Rate = k[A]2[B]

Equal volumes of 1M HCl and 1M H2SO4 neutralised by NaOH solution and liberates heat of ‘X’ kcal and ‘Y’
kcal respectively. Which of the following is true?

(A) X=Y
604 1166 (B)
(B) X=0.5Y

(C) X=2Y

(D) None of the above

604 1167 The internal energy of one mole of gas is (A)

(A) 3RT/2

(B) KT/2

(C) RT/2

(D) 3KT/2

Which one of the following statement is not correct about the binary mixture which forms an ideal solution?

(A) Has only very weak interaction between solute and solvent molecules

604 1168 (B) Can be separated into its two components by repeated distillation (A)

(C) Has a vapour pressure intermediate between the vapour pressure of pure components

(D) Has a boiling point intermediate between the vapour pressure of pure components

Vapour pressure of CCl4 at 25oC is 143mm of Hg 0.5g of a nonvolatile solute (Mol. wt 65) is dissolved in
100mL CCl4 . The vapour pressure of solution is found to be

(A) 141.97mm of Hg
604 1169 (A)
(B) 94.39 mm of Hg

(C) 199.34mm of Hg

(D) 143.99mm of Hg

The molecular weights of four substances are given below. The 1% aqueous solution of which will have the
lowest freezing point?

(A) 82
604 1170 (C)
(B) 180

(C) 60

(D) 342

Which one of the following is not a colligative property?

(A) Donnan Membrane equilibrium

604 1171 (B) Lowering of vapour pressure (A)

(C) Osmotic pressure

(D) Elevation of boiling point

The average translational kinetic energy of an ideal gas per mole (E) at 25oC

(A) 3.716 x 103J mol–1

604 1172 (B) 1.651 x 103J mol–1 (A)

(C) 0.371 x 103J mol–1

(D) 0.311 x 103J mol–1

Which of the following is classified as polyester polymer?

(A) Nylon-66

604 1173 (B) Bakelite (C)

(C) Terylene

(D) Melamine

604 1174 The vibrational degree of freedom of the following molecules CO2, H2O and C2H2 are (B)

(A) 3, 3 and 7

(B) 4, 3 and 7

(C) 4, 3 and 6

(D) 3, 3 and 6

The boiling point of n-heptane is 36oC. the molar heat of vaporization of n-heptane is (assume that it obeys
Trouton's rule)

(A) 27.192 k J mol–1
604 1175 (A)
(B) 3.168 k J mol–1

(C) 2.719 k J mol

(D) 31.680 k J mol–1

The viscosity of a gas with the increase of temperature

(A) Same as previous

604 1176 (B) Decreases (D)

(C) None of above

(D) Increases

The kinetic energy of ejected electron due to photoelectric effect is

(A) independent on the intensity of incident radiation

604 1177 (B) varies linearly with frequency of incident radiation (D)

(C) dependent on the intensity of incident radiation

(D) Both (A) and (B)

The ground state energy of the electron in He+ species (given, RH = 13.60 eV)

(A) –13.60 eV
604 1178 (B) 54.40 eV (C)

(C) –54.40 eV

(D) 13.60 eV

What will be the wavelength of the ball of mass 0.1 kg moving with a velocity of 10 m s–1

(A) 66.26 x10–34 m

604 1179 (B) 6.626 x10–32 m (D)

(C) 0.66 x10–34 m

(D) 6.626 x10–34 m

Heisenberg uncertainty principle is expressed mathematically as

(A) Δx � Δ(mvx) > h/4π

604 1180 (B) Δx � Δ(mvx) ≥ h/4π (B)

(C) ) Δx � Δ(mvx) < h/4π

(D) Δx � Δ(mvx) ≤ h/4π

604 1181 Spectral series of hydrogen atom, which comes under visible region of electromagnetic radiation (A)

(A) Balmer series

(B) Lyman series

(C) Paschen series

(D) Both (A) and (B)

For an ideal gas relation between the enthalpy change and change in internal energy at constant temperature is
given by

(A) H=E+PV
604 1182 (C)
(B) ΔH= ΔE+ ΔnRT

(C) ΔH= ΔE+P ΔV

(D) ΔH= ΔG+TΔS

The radii of third orbit of hydrogen atom (Given, a0 = 0.53�)

(A) 2.12 �

604 1183 (B) 0.477 � (C)

(C) 4.77 �

(D) 0.212 �

The Wien's displacement law is expressed mathematically as

(A)

(B)
604 1184 (D)

(C)

(D)

When we apply external voltage of 1.1 V to the deniell cell, then which of the following is correct?

(A) No current flows through the cell

604 1185 (B) Current flows from Cu to Zn rod (A)

(C) Current flows from Zn to Cu rod

(D) Zn dissolves at anode and copper deposits at Cathode

Calculate the value of equilibrium constant for the reaction A+B � C+D, if at equilibrium there are 1mol of A,2
mol of B, 6 mol of C and 20 mol of D, in a 1L vessel

(A) 60
604 1186 (A)
(B) 40

(C) 120

(D) 20

604 1187 The standard Gibbs energy of Daniell cell (Eo = 1.10 V) is (D)

(A) –106.13 k J mol–1

(B) –21.22 k J mol–1

(C) –10.61 k J mol–1

(D) –212.27 k J mol–1

The potential of hydrogen electrode in contact with a solution whose pH is 10

(A) –0.0591 V

604 1188 (B) –0.5910 V (B)

(C) –5.910 V

(D) –0.00591 V

604 1189 (C)
(A) i and ii

(B) only ii

(C) All of the above

(D) ii and iii

604 1190 (A) 5789.22 C (C)

(B) 578.922 C

(C) 578922 C

(D) 57892.2 C

The anodic reaction when Lead storage battery is in use

(A)

(B)
604 1191 (D)

(C)

(D)

The monomer of Buna-S are

(A) Styrene and butadiene

604 1192 (B) Isoprene and butadiene (A)

(C) Butadiene and vinyl chloride

(D) Butadiene

604 1193 How much of electricity is required to produce 20g of Ca from molten CaCl2 ? (A)

(A) 1 F

(B) 2 F

(C) 4 F

(D) 3 F

At atmospheric pressure, azeotropic solutions

(A) Cannot be separated into pure components by fractional distillation

604 1194 (B) Can be separated into pure components by fractional distillation (A)

(C) Can be separated into its components by single distillation

(D) Can be separated into its components by steam distillation

As compared to iron, aluminum has

(A) Higher tendency to oxidize

604 1195 (B) Less tendency to oxidize (A)

(C) Equal tendency to oxidize

(D) None of the above

Rate expression for half order reaction from the followings is

(A)

(B)

604 1196 (A)
(C)

(D)

604 1197 (A)

(A) i and iii

(B) Only i

(C) Only iv

(D) iii and iv

604 1198 The correct form of Arrhenius equation is (D)

(A)

(B)

(C)

(D)

Which one of the following is not a condensation polymer?

(A) Dacron

604 1199 (B) Neoprene (B)

(C) Melamine

(D) Glyptal

A reaction involving two different reactants can never be

(A) Unimolecular reaction

604 1200 (B) First order reaction (A)

(C) Second order reaction

(D) Bimolecular reaction