When an empty spray pump is taken and air is blown on a clean mirror , – InterviewSolution

1.	When an empty spray pump is taken and air is blown on a clean mirror , the mirror remains clean. If we gently blow out air form lungus on the same mirror , the mirror misty . Give reason.
Answer» Exhaled air contains greater amount of water vapour than the normal air . When this air comes in contact with surface of the mirror , it condenses to form tiny water droplets and gives the appearance of mist . As a result , the mirror surface turns misty

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When an empty spray pump is taken and air is blown on a clean mirror , the mirror remains clean. If we gently blow out air form lungus on the same mirror , the mirror misty . Give reason.