(A) I only
(B) I and II only
(C) I and III only
(D) I, II, and III
12 . To form a geminal diol, which of the following could attack a carbonyl carbon?(A) Hydrogen peroxide
(B) Water
(C) Potassium dichromate
(D) Ethanol
13 . In a reaction between ammonia and glutaraldehyde, what is the major product?(A) An imine
(B) A cyanohydrin
(C) A semicarbazone
(D) A hydrazone
14 . Which of the following can be used to reduce a ketone to a secondary alcohol?(A) CrO 3
(B) KMnO 4
(C) LiAlH 4
(D) Ag 2 O
15 . Imines naturally tautomerize to form:(A) oximes.
(B) hydrazones.
(C) semicarbazones.
(D) enamines.