When the air temperature is below freezing, the saturation vapour pressure over water is .

When the air temperature is below freezing, the saturation vapour pressure over water is . Correct Answer Greater than the saturation vapour pressure over ice

Saturation vapour pressure increases with rising temperature. Saturation vapour pressure just above liquid water is greater than that over ice. At temperatures below freezing it takes more vapour molecules to saturate air directly above water than it does to saturate air directly above ice.
Bissoy MCQ

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