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
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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
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