Complete the following statements by selecting the correct alternative from the choices given:   
The compound which is optically active is:

• I-butanol

• 2-butanol

•  1-propanol

• 2-methyl-I-propanol

Give the balanced equation for the preparation of salicylaldehyde from phenol.

How can the following conversions be brought about:

(i) Ethanol to methylamine.

(ii) Benzene to phenol.

 Give balanced equations for the following reactions:

(i) Benzaldehyde and Hydroxylamine.

(ii) Benzoic acid and phosphorous pentachloride.

(iii) l-butanol and Hydrogen chloride.