Which of the following acids will form an $(a)$ anhydride on heating and $(b)$ an acid imide on strong heating with ammonia?

Which of the following compounds is most reactive towards Grignard's reagent?

The acidity of alcohol,phenol,and carboxylic acid differs. Demonstrate their reactivity with $Na$,$NaOH$,and $NaHCO_3$ using the table below.

Compound	Reaction with $Na$ metal	Reaction with $NaOH$	Reaction with $NaHCO_3$
Alcohol	$H_2$ is liberated	No reaction	No reaction
Phenol	$H_2$ is liberated	Soluble salt formed	No reaction
Carboxylic acid	$H_2$ is liberated	Soluble salt formed	$CO_2$ gas is liberated

Identify the compounds $A$,$B$,and $C$ in the following reaction sequence:
$CH_3-Br$ $\xrightarrow{Mg, \text{Ether}} [A]$ $\xrightarrow[(ii) \text{Water}]{(i) CO_2} [B]$ $\xrightarrow{CH_3OH, H^+} [C]$

Identify $A$ in the following reaction:
Salicylic acid $\xrightarrow{\text{Acetic anhydride}} A$

In the following sequence,products $I$,$J$ and $L$ are formed. $K$ represents a reagent.
$1.$ The structure of the product $I$ is
$2.$ The structures of compounds $J$ and $K$ respectively are
$3.$ The structure of product $L$ is
Give the answer for questions $1, 2$ and $3.$