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Chemistry CBSE Live product
Class 9
Matter in our surroundings
Temperature scales, pressure on states of matter, and evaporation
9.
Effects of evaporation I
Question:
4
m.
Answer the following questions in a few sentences:
Clothes take longer to dry on a humid day. Explain how humidity affects evaporation.
i.
Humidity means
the amount of water vapour
the amount of dust
the amount of air
the amount of oxygen
present in the atmosphere
.
ii.
when
humidity is high
humidity is low
temperature is low
wind is low
, the air already contains more water vapour
.
iii.
This reduces the
rate of freezing
rate of condensation
rate of evaporation
rate of melting
because
the air cannot hold any more gas
the air cannot hold any more liquid
the air cannot hold any more water vapour
the air cannot hold any more air
.
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