Question

(a) why does the water kept in an earthen pot become cool in summer. (b) draw a welllabelled diagram showing sublimation of camphor. (c) Convert 340k to degree Celsius.

Answer 1

a= the water kept in an earthen pot become cool because of the pores present on pot. From the pot process of evaporation occur and causes cooling.
c= 340-273= 67c

Answer 2

Water looses its temperature through small pores present in the pot. Hence in an earthen pot (matka) become cool during summer.