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Post-UTME Biology 2011 Objective — Question 18

Question 18 of 24 from the Post-UTME Screening (Post-UTME) Biology 2011 Objective paper, with the correct answer and a full explanation.

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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 dissolves in atmospheric moisture to form acidic compounds, causing acid rain. (Note: this question is a near-duplicate of one found in the FUTO 2013/2014 Type D session in this same PDF set; the same independently-worked answer is used here.)

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