1.
The product Q and R in the following reactions respectively are

Lindlar’s catalystO3\text{Lindlar's catalyst} \quad \quad \text{O}_3
H2+CH3CCHP  Zn+H2O  Q+R\text{H}_2 + \text{CH}_3\text{C} \equiv \text{CH} \rightarrow \text{P} \; \xrightarrow{\text{Zn}+\text{H}_2\text{O}} \; \text{Q} + \text{R}