In the reaction $Ph-COOH + NaHC^*O_3 \to \text{Product}$,the labeled carbon $C^*$ is found in which of the following products?

The incorrect match is:

Match the formulas in Column-$I$ with their names in Column-$II$.

Column-$I$ (formula)	Column-$II$ (name)
$A$. $RCH=NH$	$i$. Diisobutyl aluminium hydride
$B$. $AlH(i-Bu)_2$	$ii$. Benzalchloride
$C$. $C_6H_5-CH(OCOCH_3)_2$	$iii$. Imine
$D$. $C_6H_5CHCl_2$	$iv$. Benzylidene diacetate

An unknown compound $(A)$ (molar mass $= 180$) on acylation gives a product (molar mass $= 390$). Find the number of hydroxyl group present in compound $(A)$.

Which of the following compounds will undergo decarboxylation on heating?

Write chemical reactions to affect the following transformations:
$(i)$ Butan$-1-$ol to butanoic acid
$(ii)$ Benzyl alcohol to phenylethanoic acid
$(iii)$ $3-$Nitrobromobenzene to $3-$nitrobenzoic acid
$(iv)$ $4-$Methylacetophenone to benzene$-1,4-$dicarboxylic acid
$(v)$ Cyclohexene to hexane$-1,6-$dioic acid
$(vi)$ Butanal to butanoic acid.