Inert gases have positive electron gain enthalpy. Its correct order is :

The correct sequence of reagents for the preparation of Q and R is :

In the cumene to phenol preparation in presence of air, the intermediate is

Match items of Row I with those of Row II.

Row I :

Row II :

(i) $$\alpha$$-$$\mathrm{D}$$-$$(-)$$-$$\mathrm{Fructofuranose}$$

(ii) $$\beta$$-D-$$(-)$$-Fructofuranose

(iii) $$\alpha$$-D-$$(-)$$ Glucopyranose

(iv) $$\beta$$-D-$$(-)$$-Glucopyranose

Correct match is