JAMB Chemistry 2019 Objective — Question 15
Question 15 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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Which of the following decreases when a given mass of gas is compressed to half its initial volume?
- A. Atomic radius of each particle
- B. Frequency of collision
- C. Average intermolecular distanceCorrect
- D. Number of molecules present
Explanation
When a gas is compressed: the atomic radius of each particle does not change; the frequency of collision increases; the average intermolecular distance decreases; and the number of molecules present does not change.
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