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Water kept in an earthen pot is less cool on rainy days than in summer because during the rainy days

  • A.The pores in the pot are closed
  • B.Rain water stops oozing out from the pores
  • C.The water that oozes out does not evaporate quickely because of the large percent age of moisture in the air
  • D.Surface of the pot becomes damp

Answer: C

Because the water that oozes out does not evaporate quickly, the air being already humid.

An earthen pot cools by evaporation of the water seeping through its pores, and evaporation draws latent heat from what remains. On a rainy day the air is close to saturation, so evaporation is slow and little heat is carried away.

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