Page 1 :
Weekend Test Paper, Subject : Chemistry, , Q.1) Molecule which gives fastest Sy1 reaction is, , 2, nee, ih, , Q.2) — Select the major product in the following reaction, , cs, _o

Page 2 :
Q3), , Q4), , Qs), , Qn, , N., O, d}, , Identify chiral molecule among the following, HoH, , “how, , H—7— OH, , H#—?— 0H, ©) COOH, ’ CHsCH: — Br, , , , Elimination reaction of 2-bromopentane to form pent-2-ene is, a) B-elimination reaction, b) Follows Hofimann's rule, ¢) Dehydrohalogenation reaction, d) Dehydration reaction, , ‘The alkane that gives only two monochloro products on chlorination with Cl; in the presence of, diffused sunlight is, CH, -CH —C,H,, , a) CILCHs — b) | C)CHSCH:CH; dd) (CH), CH,, , Select the incorrect statement(s) about Sy:1 reaction mechanism, , (i) Occurs in two steps, , (ii) Carbocation intermediate if formed, , (ii) Reurranged product(s) may be obtained, , (iv) The rate of reaction depends upon the concentration of alkyl halide and nucleophile, , a) (i) and (ii) only, , b) (iii) and (iv) only, , ¢) (ii), (ili) and (iv) only, d) Only (iv), , Presence of which of the following groups on haloarene at ortho- or para-positions enhancesthe, reaction rate?

Page 3 :
Q8), , Q.9), , Q.10), , Q.11), , Q.12), , Q.13), , Q.14), , Q.15), , Q.16), , cl OH, CO “ CO, —(Hy, , a) —CHs, b) —-OCHy, c) -NO;, d) -OH, , Correct order of dipole moment of the given molecules is, a) CHyF>CH)-Cl>CHyBroCHy1, b) = CH;-Cl> CH; — Br > CH; —-1> CH; —F, c) CH;—1>CH;—Br>CH,—Cl>CH;—F, d) CH;—Cl > CH; —F > CH:— Br> CH; —1, , Freon 12 is manufactured from tetrachloromethane by, a) Wurtz reaction, b) Swarts reaction, ¢) Corey — House reaction, d) Sandmeyer's reaction, , Which one of the following compounds will he most readily dehydrated in acidic medium?, a) CH;CH,OH ~~ b)(CH));C-OH c)CH;OH d)CH:O, , R-X+ KCN >(P) + KX, , Major product, , In the above reaction (P) is, a) RCHENHy b) RNSX~ — c)R-CN od) R-NC, , Which of the following class of alkyl halides are often prepared by Finkelstein reaction?, a) Alkyl chlorides b) Alkyl bromides — c) Alkyl fluorides — d) Alkyl iodides, , Fastest Sx2 reaction is observed in, a) CoHsCHsBr — b) CHeCH(Colls)Br ¢) CoMsCH(CHs)Br — d) CoHsC(CHs 4 CoHs)Br, , Select un incorrect statement about $y2 reaction mechanism, a) In case of optically active alkyl halides, Sy2 reactions are accompanied by racemization, b} Sx2 reactions of optically active halides are accompanied by inversion of configuration, ¢) No intermediate species is formed, d) In transition state, reacting carbon centre is simultaneously bonded to five atoms, , Strongest nucleophile in polar protic solvent is, a) F by Cr ©) PhO" gr, , Which of the following in not chiral’?, a) 2-Hydroxypropanoic acid, b) 2-Butanol, ¢) 2,3-Dibromopetane, d) 3-Bromopentane

Page 4 :
Q.17) Chloroform is slowly oxidized by air in the presence of light to give a poisonous gas known as, a) Syn gas b) Marsh gas ¢) Carbonyl chloride d) Carbon tetrachloride, , Q.18) Among the following, molecule with the highest boiling point is, a) CH\CH,CH,CH,Br, , CH,CH,CH — CH,, b) |, Br, CH,, |, ce) H,C—C-—CH,, |, Rr, d) CH,CH.CH,Br, , Q.19) Major product in the reaction is, Organic, i —,, , ore, Br, a) ovr, b) =, Co“ ~CH,8r, ©), Br, , ¢ -CH,CH,, Br, , Q.20) CHsBr + Mg ~ C>HsMgBr, Grignard reagent, For the above reaction most suituble solvent is, a) HO b)CHJOH — c)CH;COOH sd) Dry ether, , a), , Q.21) Which among the following is most suitable solvent for Syl reaction’?, a) Water b)DMSO ¢) Benzene 4d) Acetone, , Q.22) Correct structure of neopentyl group is