(i) Name the type of isomerism exhibited by the following pairs of compounds.

(1) (C₂H₅)₂NH and CH₃-NH-C₃H₇.

(2) 1-butanol and 2 methyl-1-propanol.

(ii) Name the type of isomerism that the compound with molecular formula C₃H₆0₂ exhibits. Represent the isomers.

Acetamide is amphoteric in nature. Give two equations to support this statement.

Basic nature of acetamide: It reacts with acids and form salts e.g.

Acidic nature of acetamide: It liberates hydrogen gas when treated with reactive metals.

Write the formula of the product formed when formaldehyde reacts with ammonia and name the product.

(i) Identify the products A, B and C:

(ii) Identify the reagents X, Y and Z.