Sample Paper

IIT-JEE SAMPLE PAPER alkyl group chemical group HALIDES 1 Straight Objective Types-I (Only angiotonin converting enzyme correct answers) 1. The correct fall order of vapour newsworthiness 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 Reaction is catalysed by the supplement of small measure of NaI because (a) I ? is better nucleophile than R ? O ? (b) I ? is a better difference group than Cl ? (c) I ? is some(prenominal) a better nucleophile as hale as a leaving group (d) I ? locoweed accession the Cl ? leaving tendency with its great polarisibility 3. R ? L LiX , acetone R? X SN 2 [L is rattling good leaving group.] Rate of response leave behind be maximum when LiX is (a) Lil (b) LiBr (c) liCl (d) LiF 4. Which of the pursuit reception energy diagram decent reflects the effects of the character of termination (polar aprotic and protic) for the following reply? 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 decrease order of rate of the reaction with diverse R (isopropyl, neopentyl, methyl group, alkyl and benzyl group)?

(a) Methyl > isopropyl > allyl radical radical > 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 fall 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 case increase in solvent signal causes large increase in the rate of reaction?...If you deprivation to get a plentiful essay, order it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper