1. . The process in which substance gains electrons is called:
(A) Oxidation
(B) Hydrogenation
(C) Sublimation
(D) Reduction
2. . In the reaction of formation of magnesium oxide, magnesium undergoes:
(A) Reduction
(B) Decomposition
(C) Hydrogenation
(D) Oxidation
3. . A zinc ion is formed due to oxidation:
(A) Sometimes true
(B) Always false
(C) Always true
(D) Cannot be determined
4. . Removal of oxygen from a compound is an example of:
(A) Reduction
(B) Oxidation
(C) Oxygenation
(D) Dehydrogenation
5. . The total of the oxidation number in an element is:
(A) Oxidation
(B) Volatility
(C) Reduction
(D) Charge