Condensation takes place only when
(a) water vapour hits a cold surface
(b) water vapour hits a hot surface
(c) a hot surface hits a warm surface
(d) water is heated

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Solution

(a) water vapour hits a cold surface

Condensation is the process by which water vapour condenses to form a liquid, and this happens when water vapour hits a cold surface.

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Condensation takes place only when (a) water vapour hits a cold surface (b) water vapour hits a hot surface (c) a hot surface hits a warm surface (d) water is heated

(a) water vapour hits a cold surface Condensation is the process by which water vapour condenses to form a liquid, and this happens when water vapour hits a cold surface.

Condensation takes place only when
(a) water vapour hits a cold surface
(b) water vapour hits a hot surface
(c) a hot surface hits a warm surface
(d) water is heated

(a) water vapour hits a cold surface

Condensation is the process by which water vapour condenses to form a liquid, and this happens when water vapour hits a cold surface.