WAEC Chemistry 2021 Objective — Question 21
Question 21 of 50 from the West African Examinations Council (WAEC) Chemistry 2021 Objective paper, with the correct answer and a full explanation.
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21. Under which conditions of pressure (P) and temperature (T) would the volume of an inflated balloon increase? When
- A. both T and P are increased
- B. both T and P are decreased
- C. T is increased and P is decreasedCorrect
- D. T is decreased and P is increased
Explanation
Volume is directly proportional to temperature and inversely proportional to pressure (combined gas law), so V increases when T rises and P falls.
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