Post-UTME Chemistry 2013 Objective — Question 11

Question 11 of 22 from the Post-UTME Screening (Post-UTME) Chemistry 2013 Objective paper, with the correct answer and a full explanation.

Which of the following gases dissolves in water vapour to produce acid rain during rainfall?

A. oxygen
B. carbon (II) oxide
C. Nitrogen
D. sulphur (IV) oxideCorrect

Explanation

Sulphur (IV) oxide (SO2) dissolves in atmospheric water to form sulphurous/sulphuric acid, a major cause of acid rain. (No printed answer key for this session; answer worked out independently.)

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