EASY
9th CBSE
IMPORTANT
Earn 100

On a hot humid day, why do people perspire a lot?

Important Questions on Matter in Our Surroundings

EASY
9th CBSE
IMPORTANT
Why a balloon kept in the Sun burst after sometime?
EASY
9th CBSE
IMPORTANT
Ice at 273K is more effective in cooling than water at 273 K. Why?
EASY
9th CBSE
IMPORTANT
Why does the temperature remain constant during the change in the state for a substance?
EASY
9th CBSE
IMPORTANT
Out of honey or ink which will diffuse faster and why?
EASY
9th CBSE
IMPORTANT
Convert 100°C to Kelvin scale.
EASY
9th CBSE
IMPORTANT
Why does water have high boiling point than alcohol? At what temperature in Kelvin, it can be changed into solid state and into vapours? 
EASY
9th CBSE
IMPORTANT
Name the term used for: solid directly formed from the gas.
EASY
9th CBSE
IMPORTANT
Name the term used for: gas directly formed from the solid