MEDIUM
9th CBSE
IMPORTANT
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What produces more severe burns, boiling water or steam?

Important Questions on Matter in Our Surroundings

MEDIUM
9th CBSE
IMPORTANT
For any substance, why does the temperature remain constant during the change of state?
EASY
9th CBSE
IMPORTANT
Give two characteristic properties of a liquid?
EASY
9th CBSE
IMPORTANT
Why does our palm feel cold when we put alcohol or perfume on it?
MEDIUM
9th CBSE
IMPORTANT
Give two factors which determine the rate of diffusion of a liquid in another liquid?
HARD
9th CBSE
IMPORTANT
Draw a labelled diagram to show the sublimation of Ammonium chloride?
MEDIUM
9th CBSE
IMPORTANT
How will you show that, by applying pressure, particles of matter can be brought close together?
HARD
9th CBSE
IMPORTANT
Show diagrammatically, the interconversion of the three states of matter.
MEDIUM
9th CBSE
IMPORTANT
Ice melts by absorbing heat. When it melts, its temperature remains the same. Where does the heat energy go?