The acidic hydrolysis of ether (X) shown below is fastest when

Match the chemical conversions in List I with the appropriate reagents in List II and select the correct answer using the code given below the lists :

The compound that does NOT liberate CO₂, on treatment with aqueous sodium bicarbonate solution, is

Match the reactions in Column I with appropriate types of steps/reactive intermediate involved in these reactions as given in Column II :

	Column I		Column II
(A)		(P)	Nucleophilic substitution
(B)		(Q)	Electrophilic substitution
(C)		(R)	Dehydration
(D)		(S)	Nucleophilic
		(T)	Carbanion