Some reactions of amines are given. Which one is not correct? 
 

1.
2.	\(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{NH}_2+\mathrm{HNO}_2 \rightarrow \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{N}_2 \)
3.	\(\mathrm{CH}_3 \mathrm{NH}_2+\mathrm{C}_6 \mathrm{H}_5 \mathrm{SO}_2 \mathrm{Cl} \rightarrow \mathrm{CH}_3 \mathrm{NHSO}_2 \mathrm{C}_6 \mathrm{H}_5 \)
4.	\(\left(\mathrm{CH}_3\right)_2 \mathrm{NH}+\mathrm{NaNO}_2+\mathrm{HCl} \rightarrow\left(\mathrm{CH}_3\right)_2 \mathrm{~N}-\mathrm{N}=\mathrm{O} \)

An organic compound 'A' on treatment with NH₃ gives 'B', which on heating gives 'C'. 'C',
when treated with Br₂ in the presence of KOH produces ethylamine. Compound 'A' is:

1.	CH3CH2COOH
2.	CH3COOH
3.	CH3CH2CH2COOH
4.

Which of the following compounds is most basic?

1.		2.
3.		4.

An organic compound ($C_3{H}_{9}N$) (A), when treated with nitrous acid, gave an alcohol, and N₂ gas was evolved. (A) on warming with CHCl₃ and caustic potash gave (C) which on reduction gave isopropylmethylamine. The structure of (A) is:

1.		2.
3.		4.

Which of the following compounds has a higher basic character than aniline?

1. Diphenylamine

2. Triphenylamine

3. p-nitroaniline

4. Benzylamine

Propanoic acid gives a series of reactions as given below.
 

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}\stackrel{{\mathrm{SOCl}}_2}{\to }\mathrm{B}\stackrel{{\mathrm{NH}}_3}{\to }\mathrm{C}\underset{{\mathrm{Br}}_2}{\overset{\mathrm{KOH}}{\to }}\mathrm{D}$ 
The structure of D would be:

1. $C{H}_{3}C{H}_{2}C{H}_{2}N{H}_2$

2. $C{H}_{3}C{H}_{2}CON{H}_2$

3. $C{H}_{3}C{H}_{2}NHC{H}_3$

4. $C{H}_{3}C{H}_{2}N{H}_2$

Which compound, upon reduction with lithium aluminium hydride, yields a secondary amine?

1. Nitroethane

2. Methylisocyanide

3. Acetamide

4. Methyl cyanide

 The structure of C in the below-mentioned reaction is: 

1.
2.
3.
4.

What is the product formed in the below reaction?
  \(+ NaNO_2 + HCl \longrightarrow Product\)

1.		2.
3.		4.