Exercise 1

An acid with molecular formula ${\mathrm{C}}_7{\mathrm{H}}_6{\mathrm{O}}_3$ forms three types of sodium salts, i.e., ${\mathrm{C}}_7{\mathrm{H}}_5{\mathrm{O}}_3\mathrm{Na}, {\mathrm{C}}_7{\mathrm{H}}_4{\mathrm{O}}_3{\mathrm{Na}}_2$ and ${\mathrm{C}}_7{\mathrm{H}}_3{\mathrm{O}}_3{\mathrm{Na}}_3$. The basicity of the acid is :

Formalin is an aqueous solution of

Aldehydes can be oxidised by

Which of the following does not give benzoic acid on hydrolysis?

Acetic anhydride is prepared in the laboratory by heating sodium acetate with _______.

Synthesis of an ester involves the reaction of alcohols with _______.

What product is formed when acetic acid reacts with ${\mathrm{P}}_2{\mathrm{O}}_5$.

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CONH}}_2$ is boiled with aqueous $\mathrm{NaOH}$, then the reaction mixture is acidified with $\mathrm{HCl}$. The products obtained are