KEAM 2013 Physics and Chemistry Paper

An allylic halide is an alkyl halide in whose molecules there are one or more halogen atoms are present at allylic carbon. (Allylic carbon is a carbon atom bonded a carbon atom that in turn is doubly bonded to another carbon atom).
(a) CH3−

CH |‌‌‌

Br

−CH=CH−CH3
  4 -bromopent- 2 ene
(b) CH3−

Br

|‌‌ CH

−

‌‌‌‌‌CH3 |

C

=CH2
 3 -bromo-2-methylbut-1-ene
(c) CH3−CH=CH−

Br‌‌‌‌‌‌

|‌‌‌‌‌‌‌ CH2

   1-bromobut-2 ene
(d)

Br‌‌‌

|‌‌‌‌‌ CH2

−CH2−CH=CH2
  4 -bromobut-1-ene
(e)

CH2 |‌‌‌‌‌‌‌

Br‌‌‌‌‌‌

−

C

| ‌‌‌‌‌‌CH3

=CH2
 3-bromo-2 methyl propene