Which compound will liberate CO₂ from NaHCO₃ solution?

(1) CH₃CONH₂

(2) CH₃NH₂

(3) (CH₃)₄N⁺OH^-

(4) CH₃N⁺H₃Cl^-

${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NO}}_2\stackrel{\mathrm{Fe}/\mathrm{HCl}}{\to }\mathrm{A}\underset{273<mspace\; width="1em"></mspace>\mathrm{K}}{\overset{{\mathrm{NaNO}}_2/\mathrm{HCl}}{\to }}\mathrm{B}\underset{283<mspace\; width="1em"></mspace>\mathrm{K}}{\overset{{\mathrm{H}}_2\mathrm{O}}{\to }}\mathrm{C}$ 'C' is 

1. ${\mathrm{C}}_6{\mathrm{H}}_5-\mathrm{OH}$

2. ${\mathrm{C}}_6{\mathrm{H}}_5-{\mathrm{CH}}_2\mathrm{OH}$

3. ${\mathrm{C}}_6{\mathrm{H}}_5-\mathrm{CHO}$

4. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NH}}_2$

Identify the product formed from the reaction of nitrobenzene with conc. HNO₃/H₂SO₄ at 80-100°C:
1. 1,4-Dinitrobenzene 
2. 2,4,6-Trinitrobenzene
3. 1,2-Dinitrobenzene 
4. 1,3-Dinitrobenzene

Which of the following compounds is most basic here

1. diphenyl amine

2. dimethyl amine

3. guanidine

4. trimethyl amine

Whose melting point is the highest?

Carbylamine test is performed in alcoholic $KOH$ by heating a mixture of 

1. trihalogenated methane and a primary amine

2. an alkyl halide and a primary amine 

3. an alkyl cyanide and a primary amine

4. chloroform and silver powder 

Hinsberg reagent is 

1. $C_6{H}_{5}NO$

2. $C_6{H}_5{N}_{2}Cl$

3. $C_6{H}_{5}S{O}_{2}Cl$

4. $C_6{H}_{5}S{O}_{3}H$

When acetamide is treated with $NaOBr$, the product formed is

1. $C{H}_{3}OH$

2. $C{H}_{3}N{H}_2$

3. $C{H}_{3}CN$

4. $C{H}_{3}COBr$
$$

The compound which one reaction with aqueous nitrous acid at low temperature produces an oily nitrosamine is

1. methylamine

2. ethylamine

3. triethylamine

4. diethylamine

Which compound is formed when ${\left(C{H}_3\right)}_4{N}^{+}O{H}^{-}$ is heated ?

1. $C_2{H}_{5}N{H}_2$

2. ${\left(C{H}_2\right)}_{3}N$

3. $C{H}_{3}N{H}_2$

4. ${\left(C{H}_3\right)}_{3}N$