Aldehydes Keton...

Which of the following compounds does not have a carboxyl group?

The oxidation products of 1-nitronaphthalene and $\alpha$-naphthylamine respectively are :

$X$ is:

What is the compound $A$?

Toluene$\xrightarrow[]{KMnO_{4}/KOH/H_{3}O^{\bigoplus }}$ A. 

In the manufacture of acetic acid from aerial oxidation of acetaldehyde, the catalyst used is :

$CH_{3}CH_{2}CH_{2}CHO\overset{x}{\rightarrow}CH_{3}CH_{2}CH_{2}COOH$
In the above reaction X is an oxidising agent and X is__________.

On vigorous oxidation by permanganate solution $(CH_{3})_{2}C=CH-CH_{2}CHO$ gives :

Assertion (A) : $CH_{3}CN$ on hydrolysis gives Acetic Acid
Reason (R) : Cyanides on hydrolysis liberates $NH_{3}$ gas