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Subjects
Science CBSE
Class 9
Matter in our surroundings
Matters and their properties
5.
Interconversion of the three states of matter
Exercise condition:
2
m.
Choose the correct answer for the following questions:
1
.
What happens to the density of the molecules of an air balloon while heating?
Decreases
Remains same
Doubles
Increases
2
.
Which of the following will not increase the rate of evaporation of a liquid?
Increase in wind speed
Increase in temperature
Increase in surface area
Increase in humidity
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