The functional group present in acetic acid is:

1. Ketonic >C=O
2. Hydroxyl -OH
3. Aldehydic -CHO
4. Carboxyl -COOH

The unsaturated hydrocarbons undergo:

1. a substitution reaction
2. an oxidation reaction
3. an addition reaction
4. none of the above

Hydrocarbon which is a greenhouse gas is:

1. Butane
2. Ethylene
3. Ethane
4. Methane

(a) The IUPAC name of acetylene is:

(i) Propane

(ii) Propyne

(iii) ethene

(iv) ethyne