Identify the reaction so that carbonyl group of aldehydes and ketones is reduced to methylene group on treatment with Zinc-amalgam and concentrated hydrochloric acid.

Which of the following on reaction with Grignards reagent followed by hydrolysis forms tertiary alcohol?

Identify the product formed when Hex-3-enenitrile is reduced with diisobutylaluminium hydride followed by acid hydrolysis?

Identify the products of following reaction?

Formaldehyde + Benzaldehyde$\xrightarrow[\text { ii) } \mathrm{H}_3 \mathrm{O}^{+}]{\text {i) conc. } \mathrm{NaOH}}$ Products