WAEC Chemistry 2020 Objective — Question 27
Question 27 of 50 from the West African Examinations Council (WAEC) Chemistry 2020 Objective paper, with the correct answer and a full explanation.
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Which of the following reactions are always exothermic? I. Neutralization II. Decomposition III. Combustion
- A. I and II only
- B. I and III onlyCorrect
- C. II and III only
- D. I, II and III
Explanation
Neutralization reaction and combustion are always exothermic, i.e. they are always accompanied by heat loss.
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