When acetaldehyde is reacted with $LiAlH_4$,what is the product formed?

Compound $A$ $(C_9H_{10}O)$ shows a positive iodoform test. Oxidation of $A$ with $KMnO_4/KOH$ gives acid $B$ $(C_8H_6O_4)$. The anhydride of $B$ is used for the preparation of phenolphthalein. Compound $A$ is:

End products of the following sequence of reactions are:

Identify the product $Y$ in the sequence: $CH_3-CHO + CH_3-MgI$ $\xrightarrow{\text{Ether}} X$ $\xrightarrow{H_2O/H^{+}} Y$

Which of the following is Clemmensen reduction?

Which of the following compounds does not give the iodoform test?