(a) Account for the following :
(i) o-nitrophenol is more steam volatile than p-nitrophenol.
(ii) t-butyl chloride on heating with sodium methoxide gives 2-methylpropene instead of t-butymethylether.
(b) Write the reaction involved in the following:
i) Reimer-Tiemann reaction
(ii) Friedal-Crafts Alkylation of Phenol
(c) Give simple chemical test to distinguish between Ethanol and Phenol.

Explanation

(a) (i) See Q. 17 (ii), Paper-2018 (C), [Page 478].
(ii) The reaction of t-butyl chloride and soldium methoxide gives 2-methyl propene because methoxide is very strong base and strong nucleophile favour elimination reaction.
(b) (i) Reimer-Tiemann reaction: See Q.15 (i), Paper-2010, Delhi Board, Set-II, [Page 78].

(c ) Ethanol & Phenol : See Q 26 (b) (i), Paper-2017, Delhi Board, Set-I, [Page 406].