What is the increase in the ratio of oxygen in a chemical reaction?
(A) Reduction reaction
(B) oxidation reaction
(C) endothermic reaction
(D) displacement reaction
Sodium chloride and water are formed by the reaction of sodium hydroxide and hydrochloric acid. What is this reaction?
(A) neutralization
(B) Disintegration
(C) combination
(D) precipitation
What type of reaction is respiration?
(A) exothermic reaction
(B) combination reaction
(C) oxidation-reduction reaction
(D) two-decomposition reaction
Which of the following is not oxidation?
(A) precipitation
(B) Digestion of food
(C) Respiration
(D) combustion
Which of the following is not oxidized?
(A) combustion
(B) precipitation
(C) Digestion of food
(D) Respiration
Which of the following are strongly acidic?
(A) pH = 7
(B) pH = 14
(C) pH = 0
(D) pH = 3
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