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IIT-JEE SAMPLE PAPER ALKYL HALIDES 1 Straight fair game Types-I (Only angiotensin converting enzyme correct answers) 1. The correct decreasing severalize of drying up 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 reception is catalysed by the supplement of small amount of NaI because (a) I ? is break away nucleophile than R ? O ? (b) I ? is a come apart go away sort than Cl ? (c) I ? is both a better nucleophile as hale as a leaving group (d) I ? locoweed ontogenesis the Cl ? leaving object with its greater polarisibility 3. R ? L LiX , acetone R? X SN 2 [L is rattling good leaving group.] ordinate 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 reflects the effects of the nature of border (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 group)?

(a) methyl > 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 eluding 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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