Match the reagents in List-I with products obtained from their carbonyl compounds in List-II.

List-I		List-II
(a)	\(\text{NH}_2\text{OH}\)	(i)	Cyanohydrin
(b)	\(R-\text{NH}_2\)	(ii)	Oxime
(c)	\(R-\text{OH}\)	(iii)	Schiff base
(d)	\(H-C \equiv N\)	(iv)	Acetal

Reaction of carbonyl compounds with various reagents yields specific products:

(a) Reaction with hydroxylamine (\(\text{NH}_2\text{OH}\)) forms an oxime.
\(\text{C=O} + \text{NH}_2\text{OH} \rightarrow \text{C=N-OH} + \text{H}_2\text{O}\)

(b) Reaction with a primary amine (\(R-\text{NH}_2\)) forms a substituted imine, also known as a Schiff base.
\(\text{C=O} + R-\text{NH}_2 \rightarrow \text{C=N}-R + \text{H}_2\text{O}\)

(c) Reaction with an alcohol (\(R-\text{OH}\)) in the presence of dry HCl gas forms a hemiacetal, which further reacts with another molecule of alcohol to form an acetal.
\(\text{RCHO} + 2R'\text{OH} \rightarrow \text{RCH(OR')}_2 + \text{H}_2\text{O}\)

(d) Reaction with hydrogen cyanide (\(\text{HCN}\)) forms a cyanohydrin.
\(\text{C=O} + \text{HCN} \rightarrow \text{C(OH)(CN)}\)

Thus, the correct matching is (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i).

Answer: a-ii, b-iii, c-iv, d-i