(a) write the products formed when `CH_(3)CHO` reacts with the following reaction:
(i) HCN
(ii) `H_(2)N-OH`
(iii) `CH_(3)CHO` in the presence of dilute NaOH
(b) Give simple chemical test to distinguish between the following pairs of compound
(i) Benzoic acid and phenol
(ii) Propanal and propanone

Explanation

(i)
(b)(i) `C_(6)H_(5)COOH+NaHCO_(3)rarrC_(6)H_(5)COONa+H_(2)O+CO_(2)`
where as penol does not
(a) Account for the following :
(i) `CI -CH_(2)COOH` is a stronger acid than `CH_(3)COOH`
(ii)Carboxylic acids do not give reaction of carbonyl group
(b) write the chemical equation to illustrate the following name reaction s:
(i) Resenumund reaction
(ii) Cannizzaro 's reation
(c ) out of `CH_(3)CH_(2)-CO-CH_(3)` which gives iodoform test ?