An organic compound $A$ has the molecular formula $C_7{H}_{6}O$. When $A$ is treated with $NaOH$ followed by acid hydrolysis, it gives two products $B$ and $C$. When $B$ is oxidized, it gives $A$, when $A$ and $C$ are each treated separately with $P{Cl}_5$, they give two different products $D$ and $E$.
(i) Identify $A$, $B$, $C$, $D$ and $E$.
(ii) Give the chemical reaction when $A$ is treated with $NaOH$ and name the reaction.

Q. An aliphatic unsaturated hydrocarbon $\left(A\right)$ when treated with $HgS{O}_4/H_{2}S{O}_4$ yields a compound $\left(B\right)$ having molecular formula $C_3{H}_{6}O$. $\left(B\right)$ on oxidation with concentrated $HN{O}_3$ gives two compounds $\left(C\right)$ and $\left(D\right)$. Compound $\left(C\right)$ when treated with $P{Cl}_5$ gives compound $\left(E\right)$. $\left(E\right)$ when reacts with ethanol gives a sweet smelling liquid $\left(F\right)$. Compound $\left(F\right)$ is also formed when $\left(C\right)$ reacts with ethanol in the presence of concentrated $H_{2}S{O}_4$.
(i) Identify the compound $A,B,C,D,E$ and $F$.
(ii) Give the chemical equation for the reaction of $\left(C\right)$ with chlorine in the presence of red phosphorous and name the reaction.

Q. (a) An organic compound (A) of molecular formula $C_6{H}_{6}O$ gives violet colour with neutral ferric chloride. Compound (A) when refluxed with $CH{Cl}_3$ and $NaOH$ gives two isomers (B) and (C). Compound (A) when added ot diazomethane in alkaline medium gives an ether (D). Identify (A), (B), (C) and (D). Explain the reactions.

Q. Compound $A$(molecular formula $C_3{H}_{8}O$) is treated with acidified potassium dichromate to form a product $B$ (molecular formula $C_3{H}_{6}O$). $B$ forms a shining silver mirror on warming with ammoniacal silver nitrate. $B$ when treated with an aqueous solution of $H_{2}NCONH{NH}_2.HCl$ and sodium acetate gives a product $C$.

Q. $Be\stackrel{dryair/\Delta }{⟶}A+B$
$B\stackrel{H_{2}O}{⟶}C+D$
$D\stackrel{HCl}{⟶}E\stackrel{\Delta }{⟶}D+HCl$
Select the correct statement(s) from the following:

Q. Two compounds $A$ and $B$ are functional isomers. $A$ has fruity smell and undergoes hydrolysis in presence of acid or base to give $C$ and $D$, $C$ has same functional group as $B$, $C$ and $B$ are simultaneously treated with sodium hydroxide. The compounds obtained are treated with soda lime to give two successive homologous $E$ and $F$ which are the first two members of the series. Identify $A,B,C,D,E$ and $F$.