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Molecular Rearrangement

Total questions: 10

Worksheet time: 8mins

Name
Class
Date
1.

1,2 diketones when heated with base rearranges to give_____________ in benzedine rearrangement

a)

alpha halo acids

b)

alpha hydroxy acids

c)

alpha nitro acids

d)

alpha amino acids

2.

The conversion of phenolic esters into para acyl phenol is called is______________ rearrangement

a)

Benzidine

b)

Beckmann

c)

Fries

d)

Curtius

3.

when hydrazo benzene is boiled with acids it rearranges to give

a)

Benzidine

b)

para semidine

c)

dimethyl benzidine

d)

ortho semidine

4.

in Hofmann reaction amide is converted to amine by___________

a)

sodium hypobromite

b)

bromide-bromite

c)

hypohalous acid

d)

potassium bromate

5.

In curtis rearrangement acid azide is converted in to ___________ with the elimination of nitrogen

a)

potassium cyanide

b)

isocyanate

c)

potassium chlorate

d)

sodium bromate

6.

The stability order of carbocation is ______________

a)

Tertiary> secondary > primary

b)

primary>secondary> tertiary

c)

secondary >primary > tertiary

d)

tertiary>primary>secondary

7.

the reagent used in Beckmann rearrangement is ___

a)

PCl5

b)

HCl

c)

Br2 in NaOH

d)

AlCl3

8.

acetophenone oxime is converted to acetanilide by __________

a)

Beckmann

b)

Curtius

c)

Stevens

d)

Favorskii

9.

Hofmann reaction is applicable to carbon chain upto _______ carbon atom

a)

6

b)

5

c)

4

d)

7

10.

Curtis rearrangement involves migration of alkyl group to electron deficient _________ atom

a)

Nitrogen

b)

Carbon

c)

Oxygen

d)

None of the above