Evaporation causes cooling. Give an example.

Give reason Evaporation causes cooling.

Define cracking and give an example.

Comment on the following statements. (a) Evaporation produces cooling. (b) Rate of evaporation of an aqueous solution decreases with increase in humidity . (c) Sponge though compressible is a solid.

What are emulsions? Give an example.

Define isotopes and give an example

What are stolons? Give example.

Give an example : A mould

What are antiseptics ? Give an example.

Define metamerism and give an example.

What are macromolecules? Give examples.