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A thermally insulated vessel contains 150 g of water at 0°C. Then the air from the vessel is pumped out adiabatically. A fraction of water turns into ice and the rest evaporates at 0°C itself. The mass of evaporated water will be closest to – (Latent heat of vaporization of water = 2.10 x 106 Jkg–1 and Latent heat of fusion of water = 3.36 x 105 J kg–1 )

(1) 130 g  (2) 35 g   (3) 150 g  (4) 20 g

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Correct option (4) 20 g


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