Answer:
(i) 50 + 273 = 323 K (1)
(ii) Activity
(a) Take little amount of water in three containers which
have different surface areas.
(b) Keep them in sunlight for 2 hours.
(c) Measure the volume of left water in all three containers.
Observation The amount of water left will be least in
the container having largest surface area among them.
Conclusion Greater the surface area, more will be the
rate of evaporation. (2)
(iii) For differences Refer to theory page no.
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