WAEC Chemistry 2011 Objective — Question 3

Question 3 of 50 from the West African Examinations Council (WAEC) Chemistry 2011 Objective paper, with the correct answer and a full explanation.

What type of reaction is represented by the following equation? ²₁D + ³₁H → ⁴₂He + ¹₀n + energy

A. A. Nuclear fission
B. B. Nuclear fusionCorrect
C. C. Radioactive decay
D. D. Spontaneous decay

Explanation

This equation exemplifies nuclear fusion. In nuclear fusion, two lighter nuclei combine to give a heavier nucleus; nuclear fission, on the other hand, entails a heavy nucleus splitting into two light nuclei of comparable masses.

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