Identify the products of following reaction?

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

Which of the following does NOT exhibit haloform reaction?

Which of the following is used as reagent in Etard reaction?

Identify the name of reaction if carbonyl group of aldehydes and ketones is reduced to methylene group on treatment with hydrazine followed by heating with sodium hydroxide in ethylene glycol.