An orgainc compound A upon reacting with `NH_(3)` gives `B` On heating `B` give `C.C` in presence `KOH` reacts with `Br_(2)` to yield `CH_(3)CH_(2)NH_(2) A` is .

Options

A. `CH_(3)- underset(underset(CH_(3))(|))(CHCOOH)`
B. `CH_(3)CH_(2)COOH`
C. `CH_(3)COOH`
D. `CH_(3)CH_(2)CH_(2)COOH`

Answer

B

Explanation

`CH_(3)- underset((A))(CH_(2))- COOH overset(NH_(3))rarr CH_(3)- CH_(2)- underset((B))(- ) overset(-+)(COONH_(4)) overset(Delta)rarr CH_(3)- underset((C))(CH_(2))- COONH_(2) underset("Hoffmann bromamide reaction")overset(KOH+ Br_(2))rarr CH_(3)- underset(("Ethylamine"))(CH_(2)- NH_(2))`