Select the option in which the incorrect major product is shown.

Which of the following compounds will not give "Iodoform" by reaction with "Sodium hypoiodite"?

Which of the following has the most acidic hydrogen?

The given compound can be converted into the product by which of the following reagents?

In the reaction,
$C_6H_5COCl \xrightarrow[(ii) Y]{(i) X} C_6H_5CH=CHCOOH$
$X$ and $Y$ are

An organic compound $P$ having molecular formula $C_6H_6O_3$ gives a ferric chloride test and does not have an intramolecular hydrogen bond. The compound $P$ reacts with $3$ equivalents of $NH_2OH$ to produce oxime $Q$. Treatment of $P$ with excess methyl iodide in the presence of $KOH$ produces compound $R$ as the major product. Reaction of $R$ with excess iso-butylmagnesium bromide followed by treatment with $H_3O^{+}$ gives compound $S$ as the major product. The total number of methyl $(-CH_3)$ groups in compound $S$ is . . . .