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An organic acid (A) reacts with concentr...

An organic acid `(A)` reacts with concentrated `H_2 SO_4` to give a neutral oxide `(B)`, acidic oxide `(c)` and a diatomic oxide `(D)`. When `(D)` reacts with chlorine gas, a poisonous gas `( E)` is evolved. This gasw with ammonia gives an organic compound `(F)`. The compound `(A)` and `(F)` are.

A

`H_(2)C_(2)O_(4), NH_(2)CONH_(2)`

B

`CH_(3)COH, NH_(2)CONH_(2)`

C

`CHCl_(3), CH_(3)CONH_(2)`

D

`"CCl"_(4), CH_(3)CONH_(2)`

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