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26. The latent heat of vaporisation of water is 2240 J/gm. If the work done in the process of expansion of 1 g is 168 J, then increase  in internal energy is 

(a)  2408 J                                (b)  2240 J

(c)   2072 J                                (d)  1904 J

Answer-c

(7)

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