WAEC Chemistry 2024 Objective — Question 1

Question 1 of 50 from the West African Examinations Council (WAEC) Chemistry 2024 Objective paper, with the correct answer and a full explanation.

1. Which of the following gases could be collected by downward displacement of air?

A. Chlorine
B. HydrogenCorrect
C. Hydrogen chloride
D. Sulphur (IV) oxide

Explanation

Gases denser than air are collected by upward displacement of air; gases less dense than air (like hydrogen) are collected by downward displacement of air.

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