Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers with the molecular formula $C_4H_8O$ is:

Give equations of the following reactions:
$(i)$ Oxidation of propan$-1-$ol with alkaline $KMnO_4$ solution.
$(ii)$ Bromine in $CS_2$ with phenol.
$(iii)$ Dilute $HNO_3$ with phenol.
$(iv)$ Treating phenol with chloroform in presence of aqueous $NaOH$.

What are the products $X$ and $Y$ respectively in the reactions $I$ and $II$?

Match the structures in Column-$I$ with their common names in Column-$II$ and $\text{IUPAC}$ names in Column-$III$.

Column-$I$	Column-$II$ (Common Name)	Column-$III$ ($\text{IUPAC}$ Name)
$(A)$ Phenol	$(1)$ Resorcinol	$(i)$ Benzene$-1,2-$diol
$(B)$ Benzene$-1,3-$diol	$(2)$ Catechol	(ii) Phenol
$(C)$ Benzene$-1,2-$diol	$(3)$ Phenol	(iii) Benzene$-1,4-$diol
$(D)$ Benzene$-1,4-$diol	$(4)$ Hydroquinone	(iv) Benzene$-1,3-$diol

$1^o, 2^o, 3^o$ alcohols are distinguished by

$A, B, C, D$ in the following reactions are