Nitroparaffins on reduction give:

1. Amide

2. Alkylamine

3. Ammonium salt

4. Acetanilide

Which of the following enzymes can hydrolyse urea into CO₂ and NH₃: 

1. Amylase

2. Urease

3. Lipase

4. Zymase

Which of the following amines is optically active?

(1) ${\mathrm{CH}}_3{\mathrm{NH}}_2$

(2) ${\mathrm{CH}}_3{\mathrm{NHCH}}_3$

(3) ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2-\stackrel{\stackrel{{\mathrm{CH}}_3}{|}}{\mathrm{N}}-{\mathrm{C}}_2{\mathrm{H}}_5$

(4) Sec. butylamine

The number of $\mathrm{\pi }$-bonds in the formula given below, NC-CH=CH-CN are:

(1) 5

(2) 4

(3) 3

(4) 2

What is the product formed when a ketone reacts with a primary amine?

1. Amides

2. Oximes

3. Urea

4. Imines

Ethylamine reacts with nitrosyl chloride (NOCl) to form:

(1) ethyl chloride

(2) ethyl alcohol

(3) ethyl nitrite

(4) nitroethane

Which compound will liberate CO₂ from NaHCO₃ solution?

(1) CH₃CONH₂

(2) CH₃NH₂

(3) (CH₃)₄N⁺OH^-

(4) CH₃N⁺H₃Cl^-

When nitromethane is treated with chlorine in the presence of sodium hydroxide, which of the following is
formed as the main product?

1.  Monochloronitromethane

2. Trichloromethane

3. Chloropicrin

4. None of the above

Aqueous solution of urea is:

1. Acidic

2. Alkaline

3. Almost neutral

4. Amphoteric

Primary nitroalkanes on hydrolysis give:

(1) RCOOH+NH₂OH

(2) RCOOH

(3) NH₂OH

(4) RCOR