Answer Posted / sandy

Q. cope rearranement is involving---
(A) [1,3] sigmatropic shift.
(B)[1,5] sigmatropic shift.
(C [2,1]sigmatropic shift
(D [3,3]sigmatropic shift
answer- (D)
Q. in Hofmann Rearranement, reaction intermediate is---
(A) carbanion
(B) nitrenes
(C) Carbocation
(D)carbenes
answer--(B) nitrenes
Q. free readicals are detected by--
(A) IR
(B) NMR
(C)EPR
(D) MS
answer--(C)EPR
Q. among the following the molecule with the highest dipole moments-
(A) ccl4
(B)CHCl3
(C) CH2Cl2
(D)CH3Cl
answer--(D)CH3Cl

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