In the above reaction,the molecular formula of glycerol increases by:

Product $(A)$ is

The major product of the above esterification reaction is:

From the following compounds,determine the number of compounds that give $(i)$ a red colouration with ceric ammonium nitrate and $(ii)$ a positive iodoform test: $...........$.

The number of isomeric ethers with molecular formula $C_4H_{10}O$ is:

Match the items of column $-I$ with the items of column $-II$.

Column $-I$	Column $-II$
$(A)$ Methanol	$(1)$ Conversion of phenol to $o-$hydroxybenzoic acid
$(B)$ Kolbe's reaction	$(2)$ Ethyl alcohol
$(C)$ Williamson's synthesis	$(3)$ Conversion of phenol to salicylaldehyde
$(D)$ Conversion of $2^o-$ alcohol to ketone	$(4)$ Wood spirit
$(E)$ Reimer-Tiemann reaction	$(5)$ Heated copper at $573 \ K$
$(F)$ Fermentation	$(6)$ Reaction of alkyl halide with sodium alkoxide