The reaction of cyclohexanone with $NaOH$ followed by heating $(\Delta)$ gives product $(A)$. Identify $(A)$.

Which of the following products is formed when benzaldehyde is treated with $CH_3MgBr$ and the addition product so obtained is subjected to acid hydrolysis?

Complete reaction of acetaldehyde with excess formaldehyde,upon heating with conc. $NaOH$ solution,gives $P$ and $Q$. Compound $P$ does not give Tollens' test,whereas $Q$ on acidification gives positive Tollens' test. Treatment of $P$ with excess cyclohexanone in the presence of catalytic amount of $p$-toluenesulfonic acid $(PTSA)$ gives product $R$. Sum of the number of methylene groups $(-CH_2-)$ and oxygen atoms in $R$ is....

The reaction of $3$-bromobenzaldehyde with concentrated $NaOH$ $(50\, \%)$ yields which of the following products?

Which of the following reagents reacts with benzaldehyde to produce $1$-phenylethanol?

Which of the following cannot give a yellow $ppt.$ with $I_2/NaOH$?