9th Class Science Matter in Our Surroundings Question Bank 9th CBSE Science Matter in Our Surroundings

  • question_answer
      Explain how the following factors affect the rate of evaporation of a liquid; (i) Temperature of the liquid. (ii) Area of the exposed surface.              (iii) Moisture in the surrounding air.              (iv) Increase in wind speed.

    Answer:

                                       (i) Rate of evaporation increases with rise in temperature. (ii) Evaporation is more when exposed surface area is more. (iii) Less evaporation if moisture content is high in the air. (iv) Rate of evaporation increases if wind speed increases.


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