What is the number of moles of H atoms required to prepare one mole ethylamine from one mole acetamide?

Which among following statements is NOT true about Gabriel phthalimide synthesis?

Which among the following compounds is NOT a carbocyclic compound?

Identify the product '$$A$$' in the following reaction.

$$\text { Aniline } \xrightarrow[\text { Pyridine }]{\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}} A$$