$A$ mixture of benzaldehyde and formaldehyde on heating with aqueous $NaOH$ solution gives:

$CH_3CH=CHCHO$ is oxidized to $CH_3CH=CHCOOH$ using

What product is obtained from the reaction of a Grignard reagent with a ketone?

Write down functional isomers of a carbonyl compound with molecular formula $C_3H_6O$. Which isomer will react faster with $HCN$ and why? Explain the mechanism of the reaction also. Will the reaction lead to the completion with the conversion of whole reactant into product at reaction conditions? If a strong acid is added to the reaction mixture what will be the effect on concentration of the product and why?

The reaction of acetophenone with benzaldehyde in the presence of $HCl$ and heat produces product $(A)$. Identify $(A)$.

Which of the following can give the iodoform test?