AIPMT 2014 TEST PAPER WITH SOLUTIONS (HELD ON SUNDAY 04 th MAY, 2014)

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Herbert Nelson
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1 6. What is the maximum umber of orbitals that ca be idetified ith the folloig quatum umbers? =, =, m = 0 () () () () =, =, m = 0 rbital is p z. 7. Calculate the eergy i joule correspodig to light of avelegth 5 m : (lack's costat h = Js; speed of light c = 0 8 ms ) () () (). 0 5 (). 0 8 E = hc = E =. 0 8 J 8. Equal masses of, ad methae have bee take i a cotaier of volume V at temeprature 7 C i idetical coditios. The ratio of the volumes of gases : : methae ould be : () 8 : 6 : () 6 : 8 : () 6 : : () 8 : : Accordig to Avogadro's hypothesis volume moles C So, ratio is 6 : : 6 = 6 : : 9. If a is the legth of the side of a cube, the distace betee the body cetered atom ad oe corer atom i the cube ill be : () () a a AIMT 0 TEST AER WIT SLUTINS (ELD N SUNDAY 0 th MAY, 0) () () a a CDE- The distace betee the body cetred atom ad oe corer atom is a 50. Which property of colloids is ot depedet o the charge o colloidal particles? () Coagulatio () Electrophoresis () Electro - osmosis () Tyadall effect Tydall effect is optical property. 5. Which of the folloig salts ill give highest p i ater? () KCl () NaCl () Na C () CuS Na C ill give highest p i ater because it is salt of strog base ad eak acid 5. f the folloig 0.0m aqueous solutios, hich oe ill exhibit the largest freezig poit depressio? () KCl () C 6 6 () Al (S ) () K S Depressio i freezig poit vat off's factor (i) for Al (S ) i = 5 5. Whe. litres of (g) is mixed ith. litres of Cl (g), each at S.T.., the moles of Cl (g) formed is equal to :- () mol of Cl (g) () mol of Cl (g) () 0.5 mol of Cl (g) ().5 mol of Cl (g) V(L). =.L. =. Cl = 0.5 mole. (g) Cl (g) Cl (g) iitially - mole 0.5 mole 0 after reactio (-0.5) 0.5 =0.5 mole 0 = mole

2 AIMT-0 5. Whe 0. mol M is oxidised the quatity of electricity required to completely oxidise to M is :- () C () C () 9650 C () C 6 M 7 M e M 0. mole 0. mole charge required = 0. F = = 9650 C 55. Usig the Gibbs eergy chage, G = 6.kJ, for the folloig ractio, Ag C Ag (aq) C (aq) the K sp of Ag C (s) i ater at 5 C is :- (R = 8. J K mol ) (). 0 6 () ().9 0 () As. () G =.0 RT log K sp = log Ksp log Ksp =.09 Ksp = 0.09 = The eight of silver (at t. = 08) displaced by a quatity of electricity hich displaces 5600 ml of at ST ill be :- () 5. g () 0.8 g () 5.9 g () 08.0 g Accordig to faraday's d la E Ag Ag E 600 Ag Ag = 08g 57. Which of the folloig statemets is correct for the spotaeous adsorptio of a gas? () S is egative ad, therefore, should be highly positive () S is egative ad therefore, should be highly egative () S is positive ad, therefore, should be egative () S is positive ad, therefore, should also be highly positive As. () Durig adsorptio etropy decreases, so S < 0. G = TS For spotaeous adsorptio G < 0 so should be highly egative. 58. For the reactio : X () X (g) U =. k cal, S = 0 cal K at 00 K ece G is :- ().7 k cal ().7 k cal () 9. k cal () 9. k cal Accordig to Le-Chatelier's riciple I exothermic reactios lo temperature favours the forard reactio icreasig pressure equilibrium shifts toards less umber of moles. 59. For a give exothermic reactio, K p ad K are the equilibrium costats at temperatures T ad T, respectively. Assumig that heat of reactio is costat i temperature rage betee T ad T, it is readily observed that :- () K p > K () K p < K () K p = K () K p = K As. () X () X (g); g = 0 = = U g RT =. =. kcal G = T.S = ; G =.7 Kcal 60. Which of the folloig orders of ioic radii is correctly represeted? () > > () Na > F > () F > > Na () Al > Mg > N I exothermic reactios o icreasig temperature value of K p decreases. So, K p > K p '

3 CDE g of magesium is burt ith 0.56 g i a closed vessel. Which reactat is left i excess ad ho much? (At. t. Mg = ; = 6) () Mg, 0.6 g (), 0.6 g () Mg, 0. g (), 0.8 g As. (B) 6. The pair of compouds that ca exist together is:- () Mg, 0.6 g (), 0.6 g () Mg, 0. g (), 0.8 g Mg = Iitially mole, = 0.56 moles Mg(s) (g) mole 0.56 mole Mg(s) 0.06 mole mole 0 after ( ) mole reactio mole mass of Mg = g = 0.6 g 6. The pair of compouds that ca exist together is:- () FeCl, SCl () gcl, SCl () FeCl, SCl () FeCl, Kl Both are reducig aget 6. Be is isoelectroic ith hich of the folloig ios? () () Li () Na () Mg As. () Li, Be & Li both have electro. 65. Which of the folloig molecules has the maximum dipolemet? () C () C () N () NF N > F N F µ =. D 0. D F 66. Which oe of the folloig species has plae triagular shape? As. () () N () N () N () C N has sp hybridisatio i.e. hy has plaar shape. 67. Acidity of diprotic acids i aqueous solutios icreases i the order :- () S < Se < Te () Se < S < Te () Te < S < Se () Se < Te < S movig do the group bod legth icreases so liberatio tedecy of ill be more. 68. (a) (b) Ag Ag Role of hydroge peroxide i the above reactios is respectively - () xidizig i (a) ad reducig i (b) () Reducig i (a) ad oxidizig i (b) () Reducig i (a) ad (b) () xidizig i (a) ad (b) 69. Artificial seeter hich is stable uder cold coditios oly is :- () Saccharie () Sucralose () Aspartame () Alitame 70. I acidic medium, chages Cr to Cr 7 5 hich has to ( ) bods. xidatio state of Cr i Cr 5 is :- () 5 () () 6 () 0 Cr Cr 5 has peroxy likage.

4 AIMT-0 7. The reactio of aqueous KM ith i acidic coditios gives :- () M ad () M ad () M ad () M ad M As. () KM is a strog oxidisig aget & ll oxidise to. 7. Amog the folloig complexes the oe hich shos Zero crystal field stabilizatio eergy (CFSE):- () [M( ) 6 ] () [Fe( ) 6 ] () [Co( ) 6 ] () [Co( ) 6 ] As. () Due to d 5 cofiguratio ad is a eak ligad. 7. Magetic momet.8 BM is give by hich of the folloig ios? (At. os. Ti =, Cr =, M = 5, Ni = 8):- () Ti () Ni () Cr () M As. () Ni has to upaired electro. 7. Which of the folloig complexes is :- () mer-[co(n ) Cl ] () cis-[tcl (N ) ] () cis-k [tcl ] () Na CoCl As. () Cis-plati is used as a aticacer uit. 75. Reaso of lathaoid cotractio is :- () Negligible screeig effect of 'f' orbitals () Icreasig uclear charge () Decreasig uclear charge () Decreasig screeig effect Due to poor shieldig of f-orbitals ucleus ill exert a strog attractio. Cauces lathaoid cotractio. 76. I the folloig reactio, the product (A) NNCl N () N=N N N () N=N () N=N N () N=N N (A) is :- Yello dye This is a example of electrophilic substritituio reactio [couplig reactio] N N.Cl N = N N p-aioazobezee (yello dye) Cl N 77. Which of the folloig ill be most stable diazoium salt RN X? () N X () C 6 5 N X () C N X () C 6 5 C N X As. () rimary aliphatic amies form highly ustable alkyldiazoium salts. rimary aromatic amies form aree diazoium salts hich are stable for a short time i solutio at lo temperature (7 78 K). The stability of areediazoium ca be explaied o the basis of resoace. Salt N N N = N: N = N: N = N: 78. D () glucose reacts ith hydroxylamie ad yields a oxime. The structure of the oxime ould be : () () C = N C C C C C C C = N C C C C () () C = N C C C C C C = N C C C C C

5 CDE- Glucose reacts ith hydroxyl amie to form a oxime. C C D()glucose N- C=N C 79. Which of the folloig hormoes is produced uder the coditio of stress hich stimulates glycogeolysis i the liver of huma beigs? () Thyroxi () Isuli () Adrealie () Estradiol Adrealie commoly ko as fight or flight hormoe, it is produced by the adreal glads after recevig a message from the brai that a stressful situatio has preseted itself. 80. Which oe of the folloig is a example of a thermosettig polymer? () () () () ( C C = C C ) Cl ( C C ) Cl ( N (C ) 6 N C (C ) C ) C C Thermosettig polymers are cross liked or heavily brached molecules, hich o heatig udergo extesive cross likig i moulds ad agai become i fusible. Most commo examples are bakelite. 8. Which of the folloig orgaic compouds polymerizes to form the polyester Dacro? () ropylee ad para (C 6 ) () Bezoic acid a ethaol () Terephthalic acid ad ethylee glycol () Bezoic acid ad para (C 6 ) Dacro or terylee is the best ko example of polyesters. It is maufactured by heatig a mixture of ethylee glycol ad terephthalic acid at 0 to 60 K i the presece of zic acetate-atimaoy trioxide catalyst. C C Ethylee glycol [Ethae-,-diol] C Terephthalic acid [Bezee-,-di carboxylic acid] C C C C Terylee or Dacro C 8. Which of the folloig is ot a commo compoet of hotochemical Smog? () zoe () Acrolei () eroxyacetyl itrate () Chlorofluorocarbos The commo compoets of photochemical smog are ozoe, itric oxide, ocrolei, for malde yde ad peroxyacehyl itrate (AN). ece (FC is ot commo compoet of photochemical smog. 8. I the Kjeldahl's method for estimatio of itroge preset i a soil sample, ammoia evolved from 0.75 g of sample eutralized 0 ml of M S. The percetage of itroge i the soil is : () 7. () 5. () 5. (). M V (ml) = m mol 0 m mol S = 0 m mol of N [ S N (N ) S ] mol N cotais g itroge 0 0 mol N cotais 0 0 itroge 0.75 g of sample cotais % Nitroge = = 7.% 5

6 AIMT-0 8. What products are formed he the folloig compouds is treated ith i the presece of Fe? I the above compoud,-dimethylbezee, sites for the attackig electrophile are c a b () () () () ad ad ad ad attack of electrophile o sites b & c results i same compoud as product. Although tedecy of electrophile to attack o site a is very less due to high steric hiderace so respective product is favoured ith very very less amout. 85. Which of the folloig compouds ill udergo racemisatio he solutio of K hydrolyses? (i) C Cl (ii) C C Cl (iii) (iv) C C CCl C C 5 Cl () (i) ad (ii) () (ii) ad (iv) () (iii) ad (iv) As. (,) () (i) ad (iv) As. (B) Fe (major) (mior) ly compoud (iv) C Cl results i C 5 formatio of racemic product due to chirality. 6

7 CDE- 86. Amog the folloig sets of reactats hich oe produces aisole? () C ; RMgX () C 6 5 ; Na ; I () C 6 5 ; eutral FeCl Reactivity of carboyl compouds toards NAR depeds o steric ad electroic effects. NAR reactivity : C C C C As. () () C 6 5 ; CCl; AlCl > > > N Na Na CI (SN ) 87. Which of the folloig ill ot be soluble i sodium hydroge carboate? (),, 6-triitropheol () Bezoic acid () o-nitropheol () Bezeesulphoic acid N Na Co carboic acid hile..6-triitro pheot, bezoic acid ad bezee sulphoic acid are sobuble i Na. R Acid NaC salt Co Reactio is possible i forard directio if acid is more acidic the Co. -itropheol is less acidic tha Co, hece does ot soluble i sodium hydroge carboate. 88. Which oe is most reactive toards Nucleophilic additio reactio? () C () C M of N icrease ()ve charge o sp c of 89. Idetify Z i the sequece of reactios: / C C = C () (C ) C () ( ) )C C () (C ) C C5Na Y () C C( ) C / C C=C (eroxide effect) C C C (y) Z C (C ) C C (z) 90. Which of the folloig orgaic compouds has same hybridizatio as its combustio product (C )? () Ethae () Ethye () Ethee () Ethaol As. () C C 5 C C () () N Both CC & C has same hybridisatio of carbo atom. (sp). 7

Practice Questions for Exam 3 CH 1020 Spring 2017

Practice Questions for Exam 3 CH 1020 Spring 2017 Practice Questios for Exam 3 C 1020 Sprig 2017 1. Which of the followig ca be cosidered a Brøsted-Lowry base? 5. What is the p of a solutio for which [Ba(O) 2 ] = 0.015 M? 6. The figure below shows three