Define wind.

Write a note on wind.

A man travelling towards east at 8km/h finds that the wind seems to blow directly from the north On doubling the speed, he finds that it appears to come from the north-east. Find the velocity of the wind.

(a) Define Hydrated salt. (b) Define the term: solution.

Analogy: Cool and soothing wind :Breeze. uproot trees wind:_____