Aliphatic amines are ......basic than ${\mathrm{NH}}_3$ but aromatic amines are .....basic than ${\mathrm{NH}}_3$

(1) more, less

(2) less, more

(3) both (a) and (b) 

(4) none of these

Aliphatic amines are soluble in water because:

(1) they are basic.

(2) they are amino compounds.

(3) they are lighter than water.

(4) of formation of hydrogen bonds with water.

The general formula of quaternary ammonium compound  is:

(1) R-NH₂

(2) R₃N

(3) [R₄N]⁺X^-

(4) NH₄X

Amines have:

1. garlic odour

2. fishy odour

3. jasmine odour

4. bitter almonds odour

Aqueous solution of urea is:

1. Acidic

2. Alkaline

3. Almost neutral

4. Amphoteric

Urea is not used:

1. As fertilizer

2. In the manufacture of plastic

3. In the preparation of medicines

4. In the purification of water

Nitroparaffins on reduction give:

1. Amide

2. Alkylamine

3. Ammonium salt

4. Acetanilide

Which of the following is not a nitro derivative?

1. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NO}}_2$

2. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{ONO}$

3. ${\mathrm{CH}}_3\underset{\underset{{\mathrm{CH}}_3}{|}}{\mathrm{C}}\mathrm{H}-{\mathrm{N}}_{{\searrow }_{\mathrm{O}}}^{{=}^{\mathrm{O}}}$

4. ${\mathrm{C}}_6{\mathrm{H}}_4\left(\mathrm{OH}\right){\mathrm{NO}}_2$

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