Identify the compound $X$ in the following reaction.
Acetone $+ X \stackrel{\Delta}{\longrightarrow} CHI_3 \downarrow + CH_3COONa + 2 NaOH$

An alkene $(A)$ $C_{16}H_{16}$ on ozonolysis gives only one product $(B)$ $C_8H_8O$. $(B)$ can also be obtained by the hydrolysis of the product obtained from the reaction between cyanobenzene and $CH_3MgBr$. $(A)$ shows geometrical isomerism and decolourises $Br_2$ water. $(B)$ on treatment with $SeO_2$ produces $(C)$. Which statement is not correct about $(C)$?

Write about the Wolff-Kishner reduction reaction. Or,write the reduction reaction of aldehydes and ketones by the Wolff-Kishner reduction reaction.

Clemmensen reduction of ketones is carried out in

Assertion : Benzaldehyde is more reactive than ethanol towards nucleophilic attack.
Reason : The overall effect of $-I$ and $+R$ effect of phenyl group decreases the electron density on the carbon atom of $>C=O$ group in benzaldehyde.

Which of the following compounds shows tautomerism?