Question

Assertion (A): Water is used as coolant in industrial cutting and grinding processes. Reason (R): Ethanol causes greater cooling effect than water during evaporation but water has greater latent heat of vaporisation than ethanol. ( 1 ) A and R are false ( 2 ) A is false and R is true ( 3 ) A and R are true ( 4 ) A is true and R is false

Answer 1

Answer:

Assertion (A): Water is used as coolant in industrial cutting and grinding processes. Reason (R): Ethanol causes greater cooling effect than water during evaporation but water has greater latent heat of vaporisation than ethanol.

Explanation:

both a and r are correct