WAEC Chemistry 2018 Objective — Question 14

Question 14 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.

Pure water can be made to boil at a temperature lower than 100°C by

• A. reducing its quantity
• B. decreasing the external pressureCorrect
• C. distilling it
• D. increasing the external pressure

Explanation

The boiling point of water decreases with decreasing external (atmospheric) pressure.

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