APPSC Polytechnic Lectuers exam Chemistry Subject Paper held on 19th May 2011

8/6/2019 APPSC Polytechnic Lectuers exam Chemistry Subject Paper held on 19th May 2011

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1. Uranium is a. member of(1) transition series-(2) actinide series(3) III-period(4) VI-period

2 ._ Manganese shows oxidation states from +2 to+7. The most oxidising state known in 7.solubon is.(1) +7(2) +4(3) +3(4) +2

8. The follOwing polysaccheride is composed ofl3-g1ycosidic bonds :(1) Starch( 2 ) Glycogen(3) Dextrin I B .(4) Cellulose -

4 . The reaction given by two or more peptidelinkages 1s(1) Biuret test(2) Ninhydrin test(3) Xanthoproteic test(4) Pauly's test ~

6. One of the following hormones is an aminoacid derivative:(1) Epinephrine(2) Norepinephrine(3) Thyroxine(4) All of them

(3 ) PGLJ9226 . Vlhich gas is adsorbed more and easily bycharcoal?

(I) CO(2) N2(3) NH3(4) II2

The Llf2 of a nldioactive element u, 20 years,Mter 100 years, one gram of cite element \ri!!reduce to

132 gm

(2) 14 gm(3) 18 gtn

(4) 116 gillTotal number of isomers of G4HIOO will be(1) 4(2) 5(3) 7(4-) 6

o . Which one of the following has all tbe effects,namely inductive, mesomeric and~:hyperconjugative ?(1)(2)

CHa01CHaCH = CHOCHaIIo

(3) CH2CH '" OH2(4) CH2 = = on - CB = CHz


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"~( 5 ) PGL/922

20. Which of the following is the strongest base? 25. In nuclear reactions, heavy water is used as

(1) enolisation of keto group of fructose and"then, its transformation into aldehydegroup in presence of OH- which is

(1) Be(OH)2(2) Mg(OH)2(3) Al(oH)3(4) Si(oH)4

21. Which of the following is a weak electrolyte?L) net

HB.3 HI(4) RF

22. For exothermic reaction(1) .: ' lH"" +ve(2) dH = -ve ~(3) LUi = 0 I(4) None of the above

.The process inwhich heat is neither ailowed27.to enter nor allowed to leave the system is(l) Isothermal2 : A crabatie _

L orie(4) Isobaric

. For a first order reaction tl/2 =6.93 min. 28.What is the rate constant value (min-I).?(1) 01"(2) 2(3) 10(4) 1

(1) Decomposer(2) Absorber(3) Moderator(4) Promoter " !ifri, .1'""

26. Ketones' do not reduce ToBen's reagent, butfructose with a keto group reduces it. It isat;.nbu1.lld to

present in Tollen's reagent(2) - CI-IOH group which is ruso oxidised to

keto group(3) Both statement. aro correct(4) None of the statements is correct

Which is a non-reducing sugar?(1) Cellobiose ., . . . ,(2) Sucmse(3) Lactose(4) Maltose

Which polysaccharide has 0':-(1""-76)glycosidelinkage ? . ~,(1) Amylose i!?

I(2) Cellulose(3) Amylopectin ~

~(4) All of these

,_ .. .


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PGL/92229. To identify the N-terminal amino acid of 33.

peptide I-fluoro-2.4-dinitrobenzene (FDNB) isused. This is called(1) Van Slyke reagent(2) Sorenson reagentt3) Sanger reagent(4) None is correct

30. Generally all the amino acids have primaryamino function with the exception ofL) Isoleuci e(2) Proline(3) Leucine( ...) Alamne

3l. Which is bane amino acid?(1) ~aline

1 (2) Aspartic acide-r - f . ~P " '" (3) Histidine.

(4 ) Leucine

hich of the following statements about 36."it2min B12 i~wrong ?(1) It z : needed in very small amount by

the human body(2 it occurs in plan s(3 I is present in ain water() It bas a cobalt atom

(6 )Strong electrolytes are those which(1) conduct electricity(2) dissolve readily in water(3) show more degree of ionisation eVE

ordinary dilution(4) dissociate into ions at high dilution

34. The increase in molar conductance ofwith dilution is due to(1) decrease in the interionic forces(2) increase in the self ionisation of wat(3) hydrolysis of HCI(4) decrease in self ionization of water

35. The factors which in11uence the conductanof solution ;(1) solute-solute interaction(2) solute-solvent interaction(3) temperature(4) All of these _

(1) NaCl-

A cell constant is generally foundmeasuring the conductivity of aqueosolution of

(2) KCl(3) BaCl2(4) MgC12


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( 7 )

naturally occurring stable isotopes?37. Whloh of the following elements has no 41. A bomb based on atomic fiss;on involve,PGU922

(1) FLUOrine (1) 238U and 19~ On2 35 and 1(2) -9 2U OD

( 2 ) Oxygen

'"p3~U d IH ~(3) Hydrogen

(3) 92 an 1(4 Chlorine235U and IH4) 92 1

ficru-C1Lrie of radioactivity is equal to(1) 237 x 10 - becquerel(2) 3'7 X 104 becquerel(3) 1micro-becquerel(4) 1037 x 10 becquerel

When a radioactive substance is subjected tod 43.vacuum, the rate of iSintegration per

second(1) increases considerably(2) is !lOt. affected

ers a .d:!ght necrease(4) increases only if the products are gases

When a nuclide emits y-rays it loses(1) Stability(2) Electrons

Charge4) Energy

42. Nuclear fus.ion(1) cannot be - controlled(2) can be controUed using boron rode(3) can be controlled using cadmium rods(4) can be controlled using graphite rods

The decay of mass during nuclear fission andfusion are

(1) 0-1% and 0'231%(2) 0231% and 0'1%(3) 04% and 0-2%(4) 0-]% and 0.7%

44. Which radioactive isotope is used fordetecting hyporthyroidism ?

"'# -1) G O Co J""2) 32p(3) 131r -(4) 14C


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_---- -----",_--

?GL 922 ( 8)45. T::-~ rate 01 reaction that does not involve 49. The h alf- life of a first order reaction is

gases, does not depend upon 2 hours. The time required for the completionof 999% of the reaction is

(1) Concentration(~) Catalyste n Pressure(4) Temperature

~ .;.46. The reaction between Hz and 0z to form HzO

at ordinary temperature in the absence of.catalyst is(1) Moderately slow reaction2 Fast reaction(3 Immeasurahly :;low reaction{4}-- Kone of the above

" & . . The FpeciE.e rate of a first order reactiondepends on(1) Temperature(2) Concentration of the product(3) 'l'ime~-(4) Concentration of the reactant

48. _ia3i: of the processes by which the ozone inthe zone layer of the upper atmosphere getsde::ooroyed hwol ...e!_ ) thermal reactions

3) first orG.e~ reactions .-~) second order reactions

(1) 40 hours

(2) 5 hours

( 3 ) 20 hours I(4) 10 hours

50. Activation energy of any reaction depends on

(1) concentration of reactants

(2) number of collisions per unit time

(3) nature of reactants(4) temperature'/

51. In a chemical reaction if all the reactantsand products are in liquid state then(1) lffi = = Iili L(2) 6H < 6E(3) 6H > Iili(4) None of these

52. The heat absorbed in a reaction at constanttemperature and volume is equal to(1) 6H of the reaction(2) aE of the reaction(3) - LUI of the reaction(4) - 6E of the reaction


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53. Of the following, which does not have nuclear 58. Which of the fOllowing is not a nucleophile ?spin?

54. Wl-:at is the ratio of peak areas due to - CHsgroup ar-d - OR group inNMR spectrum ?59. 'Drops of liquid assume a spherical shape,

due to

(1) laC(2) 12C(3) 13N(4) SIp

1 3 :12 5:I;) J :24) 4:6

Wha:; is the range of Raman shift ?(1)(2)

20 -100 cm-l100 - 4,000 cm-l

(3) 50 - 80 cm-1(4) 150 - 2,000 em-I

is an excellent solvent forRaman spe-ctroscopy.rm

Ethanol

(9 ) PGl/922

(1) H2O(2) BFs(3) NIlg . . . . =~ '*4) OH- " " ' .

(1) pressure(2) temperature(3) "-urface tension ,,~~~1 ( 4) None of these ~~

,60. Which of the following possesses largest bondangle?(1) PHs(2) AsHs . . ,. . o f - . . . .;t:

-!.. ~ I~~~(3) SbH3 _e( 4) NEg

(3) Water(4) Methanol

61. A diatomic molecule has a dipole moment of12 D. If ita bond distance is 10 A, what

fraction of an electronic charge 'e' exists oneach atom?

The following alloys are used in aircraft : (1) 12% of e(1) Aluminium alloys / (2) 18% of e(2) Chromium alloys

(3) 25% of e(3) Molybdenum alloys(4) 29% ofe(4) None of these

'l


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-I10 )

PGLl92262. In whi~h of the following structures, are the 66.tot~I number of sigma bonds equal to pi

bonds?(1) 1,2_propadiene L(2) CO2(3) Dicyanoetbenc

(4)None of these$

' "63 . Raaioactive decay follows

kineticS.0) first2) second3 rero(4) Nene of the;_e

Two micrograms of phosphorus-32 wasinjected into a living cen for biological tracerstudies. The half-life of P-32 is 14 days. Howlong will it take for the radioactivity to fall to10% of the initial value?(1) - 465 days ... I~(2) 20 days t-(3) 155 days

J

(4) 30 days

order 67. What happens to the entropY of a sys.tero atequilihrium?

64 .The pH of 0.1 MNH,pH (Kt, 0= 18 X 10-5 1\1)at 250C is 68.(1) 287( 2 ) lB(3) n13

65. Vt-:r.at 'n Dc tbe order of the reaction ifdo\l .bl ir .g the ~Dcenu-ation of a reactantin~aEe.


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( 11 ) PGL/9220. In recent years, a non-protein compound has. 74. The most active mineralo-corticoid hormone

been identified to bring about catalysis in isbiological system. The name of the compoundIS

(1) DNA( 2 ) Lipids(3) Carbohydrates .(4) RNA

. In the feedback. regulation, 'the end productbinds at(1) Acri+e site(2) Allosteric site -(3) E-8 complex(4) None of these i

. Pepsin is an example for the lass of enzymesnamely(1) Oxidoreductases2 Hydrolasas

(4) 'I'ransferases

. The inorganic ion that can act as a second ,:.78..messenger for certain hormones is(1) Ca2+,(2) Mg2+(3) Na+(4) None of these

75. The precursor for the synthesis of steroidhormones is(1) Protein(2) Amino acid f ~ft~. " l ' ";o j(3) Cholesterol F( 4 ) None of these

76. The gastrcinteetinal hormone that increasesthe flow of bile from the gall bladder is( 1) insulin(2) epinephrine . .(3) tes Losterone .#. . . . , . , ..~(4) cho leeyatokinin .-The carbon atoms involved in the osazoneformation are(1) -1and 2' 2 ) 2 and 3(3) 3 and 4

eo ;(4) 5 and 6 .. . _t;Ji'"

77.

If two monosaccharides differ in configuration_around a single carbon atom, they are knownas(1) Anomers(2) Inulin(3) Epimers j;(4) None of these

r-


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~- - . ,PGLl922 ( 12)

79. The bonds in protein structure that are not 84. The fat soluble vitamin required forbroken on denaturation are' carboxylation reaction is- '.'>-if~1f-~ 1 " ' ) . . ." _Hydrogen bonds (1) Vitamin K(2) Disulphide bonds(3) Peptide bonds (4) Ionic bonds

80. The average nitrogen content of proteins is(1) 16%- (2) 6%(3) 26%"4) 30l""

1. Name ._'e sulphur eorrtainizig essential aminoRod.1 Tryptophan2) Histidine( 3 ) Alanine(4) Methionine

82. The number of peptide bonds present in adecapeptide is1 10

3 - ,

S3. The vitamin wining isoalloxazine ring isThiamine

~ Vicamin C

None of these

(2) Vitamin E(3) Vitamin D .(4) Vitamin A

85. A gas expands from 15 to 65 L against aconstant pressure of 05 atm and during thisprocess the gas also absorbs 100 J of heat.The change in the internal energy of the gasis(1) 1533 J(2) - 1533 J ~(3) 3533 J( 4 ) - 3533 J

,86. Which of the following reactions correspondsto the definition of enthalpy formation?(1) ~ C (g) + 02 (g) ~ CO2 (g)(2) C (diamond) + 02 (g) ---7 CO2 (g)(3) C (graphite) + 02 (l) ---7 CO2 (g)

(4) C (graphite) + 02 (g) ---7 CO2 (g)

87. The strongest acid among the following is(1) m-hydroxybenzoic acid(2) Sa1icylic acid~(3) p-hydroxybenzoic acid(4) Benzoic acid


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88. DUring electrophiHc suhstitution in benzene, 92. An alloy consistiIlg of 80% Ag + 20% Cu isthe intermediate species involved is(1) carbocation /'(2) carbanion(3) free radical(4) None of these

89. Among the isomers of CsHnC1, the onewhich is ehiral is1 22-dimethy}-1-ehloTopropane

--chJoropentane ./3 2-methyl-2-chlorobutane(4 3-chloropentane

r"During bromination of benzenb m thepresence of FeBra, the species that attacksthe ring to initiate the process is f(1) FeRri(2) Br

4 _ BI" molecule

~.'.1) Pyridine ~ JN

(2) Piperidine oJH(3) Methylamine(4) Dimethylamine

I

( ~3 ) PGLl922

(1) COinage silver(2) Worm silver "...(3) Sterling silver( 4) Silver amalgam

93. Which properly is not due to H-bonding ?(l) High b.p. of water(2) High viscosity of glycerol(3) Sombility of ammonia inwater"(4) Polar nature of halogen acid .

94. Wh.ich substance has a dipole moment?(1.) CC14(2) CH2C12(a) C2C12

, ' I ; ; . 1f '(4) C2C14

95. Compound X is higbly volatile and insolublein water. Bonding in X is(1) covalent(2) ionic(3) polar covalent

. , . . '\t ~.4) co-ordinate . . .~96. Tautomerism is not shown by

(1) CH3COCH2CN(2) IIC~~

(3) CHaCH '" NOH(4) CH3CN


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isomers 101. 2~phenyl ethanol can be prepared by reactingC6H5MgBr with(1) methanol

C~H_N-;;C- - Cue} ~-;) _ RClCsHsCl + N2 + CuCI 104. How many hyperfine lines in ESR spectrumare shown by Mn +2 '?

1 Wurtz reaction (1) 3

2 G;J.t;.erm.ann reaction ( 2 ) 5

3 Sanc.IDeyer rea(;:uOIl . (3) 2: r ied _ ~ e reactio::1

( 4) 6., .

(14)PGLl92297. The number of optically, active

possible for:i;W.~'!CH3CI-i - CR - CBCH3\ \ \ isOR OR OH

ell 2

(3) 6(4) 3 /

'98. 'In which of the following is resonanco of_ ~ possible '?(1) p-toluidine-(2) Benzyl amine3 l-am~n ropane

99. 'Ubenaann's nitrtlE-O caction is for testing of

( 1) benzoic acid( 2 ) phenol.(3) nitrobenzene(4) aniline

100. The :re.'lctto

(2) ethanol(3) ethyl acetate(4) ...ethylene oxide

102. Saponification of an ester (A) followed byneutralisation gives a compound (B), whichgives violet coloration with FeCI3 The esterC A ) is(1) ethyl salicylate(2)etbyl acetate(3), ethyl benzoate(4) tliethyl phthalate

103. TheconveTsion of n,cetophenone to acetanilideis best accomplished by using,(1) Curtius rearrangement(2) Beckmann rearrangement(3) Lessen rearrangement(4) Hofmann rearrangement


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( 15 ) PGLl922105. Select the correct order of effectiveness of 109. The ligands which can get attached to the

Lewis acid catalyst in Friedel- Crafts central motal ion through more than' oneatom are called

absorption of infra~red light by organicmolecules Ill. The number of Nvmethyl groups in alkaloids

is best estimated with the help of-

reaction.(1) AlCla > Feela > ZnCl2 > BF 3/(2) AlCl3 > BF 3 > ZnCl2 > FeCIa(3) AlCla > ZnCl2 > BF 3 > FeCIa(4) AlCI3 > FeCla > BF3 > ZnC12.l!

106. Raman effect is the stud}' ofturl:rici.ity of suspension

2 emissi n of heat by molecule3)(4)

scattering of visible light by molecule

107. 'Which of the following combinations can beregarded as soft acids ? ~(1) Na+ and NH;

(2) BF3 and 8n+4(3) Cu + and Cd-+2

1T"!'t: crysta: field splitting energy for.octahedral (6 .0) and tetrahedral edt)complexes is . related to(1)

(2)

(3)

(4)

(1) ambidentate ligands I~-(2) polydentate ligands(3) chelate ligands(4) None of these

(1) Isoprene ~. If(2) Chloroprene(3) Neoprene(4) None of these

(I) HCI(2) HN03(3) HI(4) H2SO4

112. In the caseisothermalenergy

~-

of an ideal -gas undergoingtransformation, its internal

'1 Increases as the volume increases(2)(3)(4)

increases as the pressure increases, ~decreases as the pressure increases

remains the same "

113. Perkin's reaction is used for the preparationof(1) Benzoic acid( 2 ) Phthalic acid(3) Cinnamic acid(4) Salicylic acid " . , . . ir 'P '


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114. Vih,n a ,


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122. Which salts impart yellow colour to flame?(1) Beryllium salts -"(2) Calcium salts(3) Magnesium salts(4) None of these

123. Except all the remaininglanthanides are non-radioactive,rn Praseodymium? Promethium

H mmm124. Who disco.ered X-rays?

(1 Alexander Fleming(2) Sanger(3) Rontgen(4) Raman

25. X-rays destroy the following cells of theblood:(1) REG2 \VBC"

PlatelE~of tnese

X-rays are emitted when(1) high energy electrons hit a substance of

low molecular weight ,(2) high energy electrons hit a substance of

high molecular weight(3) low energy electrons hit any substance(4) low energy electrons hit a substance ofhigh molecular weight

( 17 ) PGLl922127. The shortest wavelength of X-rays emitted

from X-ray tube depends on the(1) current in the tube(2) nature of the gas in the tube(3) atomic number of target material(4) voltage applied to the tube /'

128. No two electrons will have aU the fourTquantum numbers equal, This statement is -

known as(1) Pauli's exclusion principle(2) Hund's rule -(3) Aufuau's principle(4) Uncertainty principle

. . .-129. Fusion reaction is initiated with the help of(1) low temperature(2) high temperature(3.) neutrons(4) any particle

. , . 1 ' 1 ' "130. The process in which nucleus of~a _heavyatom breaks into two, more or less equalsegments with release of energy, is known as(1) fusion(2) ionization(3.) radioactivity(4) fission / 1l' '


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PGL!922 ( 18 )

(1) Uranium 238 ~131. Which of the following is a good nuclear fuel? 186. Atomic radius is measured by

(2) Plutonium 239_(3) _ Neptunium 239(4) Thorium 236

182.. Firstatornic bomb was designed by(I) E. Fermi(2) Oppenheimer(3) E. Teler(4-) 0: Hahn

133. Which of the followingelec il 'Ode ?

(I) Rutherford's X-ray scatteringexperiment

(2) NMR(3) X-ray diffraction tec!JniquCl(4) None of these

187. Diamond and graphite are examples of(I) network solids(2) ionic solids(3) molecular solids(4) covalent solids _

is nat a strong, 138. Nucleophilic substitution of phenanthridinegives _(1) 6-substituted product1L~ NaCI(2) 4-substituted product ~2 ,Aretic acid(3) 3-substituted product3) Dilute pe.:-chlorit: acid(4) None of these(4) Aqueous NaOH solution

energy ?139. Molybdenum is used as a target element for134. Which compound has tho largest lattice production of X-rays because it is

(1) :\aF2 CsI

CeE

1 - or!:he foll~i:ng, ".Vhich is an inert complex?_~i~ffi.,),r2 .-

" 02 rFe00'H3)5r33 CrCI_Pl"

)~

(1) light and can easily deflect electrons(2) light and can absorb electrons ..(3) a heavy element with a high meltingpoint(4) an element having high thermalconductivity

140. In Bohr's model, the atomic radiuB of the firstorbit is ru' then the radius of the third orbit is(l) 9 to /(2) 27 ro(3) r o(4) 3 1'0


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( 19 )141. A radioactive substance contains 1015 atoms

and has an activity of 60 x 1011 Bq ..What isits half-life ?(1) 106 x 102 second(2) 116 x 103 second(3) 216 x 103 second(4) None of these

142. Nessler's reagent is

"K._zHgI4 - !\n40HE"I4- - KOR,

-4 Kone of these

143. The extent of adsorption of a gas ana soliddepends on(1) nature of gas(2) pressure of gas(3) temperature of the system(4) All of these

144. Physical adsorption becomes appreciable at(1) high temperature~ !UOm temperature

(4) None of these

PGL/922

I148. How many layers arc adsorbed in chemical

adsorption ?(1) Zero(2) One-(3) Many(4) Two

147. Freundlich adsorption isotherm gives astraight line on plotting

(1) x 1vs .,m p . . . . .(2) xm VB p

(3) log xill vs P

log x VB log pm4)148. Which of t.he following is an antimalerial,

substance 1(1) Quinine /(2) Cocaine(3) Carotenoid(4) None of these

149. Which of the following does not belong toisoquinoline group?,~ Papaverine ~,. . ''If(2) Narcotine(3) Terpenoids ,-(4) None of these145. According to Einstein's law, one mole of

substance during its interaction withradiation absorbs 150. Which of the following is carnphoronic acid?(1) one quantum of radiation I (1) C1oH1SO(2) one kJ of energy (2) C1oH16Oa,(3) one k.cai of energy (3) ClOH1604 l':.~~(4) one Einstein of energy (4) None of these

APPSC Polytechnic Lectuers exam Chemistry Subject Paper held on 19th May 2011

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