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IIT-JEE SAMPLE PAPER ALKYL HALIDES 1 Straight accusatory Types-I (Only angiotensin converting enzyme correct answers) 1. The correct decreasing mark of vapour word form dipole moments in CH 3 ? X is as follows (a) CH 3 ? F > CH 3 ? Cl > CH 3 ? Br > CH 3 ? I (b) CH 3 ? I > CH 3 ? Br > CH 3 ? Cl > CH 3 ? F (c) CH 3 ? Cl > CH 3 ? F > CH 3 ? Br > CH 3 ? I (d) CH 3 ? Cl > CH 3 ? Br > CH 3 ? I > CH 3 ? F 2. R ? Cl + R O ? Na + ? R ? O ? R + NaCl chemical reply is catalysed by the supplement of small amount of NaI because (a) I ? is amend nucleophile than R ? O ? (b) I ? is a die leave gathering than Cl ? (c) I ? is both a better nucleophile as hale as a leaving group (d) I ? locoweed subjoin the Cl ? leaving movement with its greater polarisibility 3. R ? L LiX , acetone R? X SN 2 [L is rattling good leaving group.] appraise of response will be maximum when LiX is (a) Lil (b) LiBr (c) liCl (d) LiF 4. Which of the followers reaction energy diagram decent reflect s the effects of the nature of margin (polar aprotic and protic) for the following reaction? SN 2 ? R ? X + Nu ? ??? R ? Nu + X ? (a) (b) (c) (d) SN 2 5. R ? X + Nu ? ??? R ? Nu + X ? ? Which of the following is correct decreasing order of rate of the reaction with diverse R (isopropyl, neopentyl, methyl radical, alkyl and benzyl radical)?

(a) methyl radical > isopropyl > allyl > benzyl > neopentyl (b) benzyl radical > allyl > methyl > isopropyl > neopentyl (c) Methyl > allyl > isopropyl > neopentyl > benzyl (d) allyl > methyl > isopropyl > neopentyl > benzyl 6. Which of the following is correct decreasing rate of hydrolysis of these halides? O CH 3 ? C ? NH ? C H ? Br || I CH 3 | CH 3 ? NH ?! C H ? Br | II CH 3 2 CH 3 ? O ? C H ? Br | CH 3 leash O CH 3 || | CH 3 ? C ? C ? Br | CH 3 IV CH 2 Br V (a) V > IV > III > II > I (c) III > II > I > V > IV (b) II > III > I > V > IV (d) V > IV > I > II > III 7. In which of the following display case increase in solvent polarity causes large increase in the rate of reaction?...If you want to get a full essay, order it on our website: OrderEssay.net

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