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Question

One gram of water on evaporation at atmospheric pressure forms 1671 cm3 of steam. The heat of vaporisation at this pressure is 540 cal/gm. The increase in internal energy is
  1. 250cal
  2. 500cal
  3. 1000cal
  4. 1500cal

A
250cal
B
500cal
C
1500cal
D
1000cal
Solution
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