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CBSE Class 9 Chemistry Matter In Our Surrounding (Easy)
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As solid melts to form liquid:
When we blow air into the balloon it inflates because:
latent heat of vapourisation is used to:
which are the favourable conditions for liquefaction of petroleum gas:
During evaporation particles of a liquid change into vapours :
The conversion of solid to gas directly is called:
The process of evaporation causes:
Which of the following substances will undergo sublimation?
At higher altitudes the boiling points of liquids
the characteristics of the particles of matter