EASY
9th CBSE
IMPORTANT
Earn 100

Is dry ice the same thing as ordinary ice?

Important Questions on Matter in Our Surroundings

EASY
9th CBSE
IMPORTANT

What is the common name of solid carbon dioxide?

EASY
9th CBSE
IMPORTANT

State one condition necessary to liquefy gases (other than applying high pressure).

MEDIUM
9th CBSE
IMPORTANT

Give one use of dry ice.

EASY
9th CBSE
IMPORTANT

What are the conditions required for the conversion of one state of matter to the other state?

MEDIUM
9th CBSE
IMPORTANT

What are the two ways in which the physical state of matter can be changed?

MEDIUM
9th CBSE
IMPORTANT

Define latent heat of fusion. How much is the latent heat of fusion of ice?

MEDIUM
9th CBSE
IMPORTANT

For any substance, why does the temperature remain constant during the change of state?

MEDIUM
9th CBSE
IMPORTANT

Under what conditions heat can be given to a substance without raising its temperature?