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A block of ice at `-20^(@)C` having a mass of 2kg is added to a 3kg water at `15^(@)C`. Neglecting heat losses and the heat capacity of the containerA. The final temperature will be less than `0^(@)C`B. Ice will completely meltC. Water will partially freezeD. Final temperature will be more than `0^(@)C` |
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Answer» Correct Answer - 3 `Q_(reqd) =2000xx1/2 xx(0-20) =20000 cal` `Q_(av)=3000xx1xx (15-0) =45000 cal` `Q_("reqd to melt")=2000xx80 =160000` `to ` not sufficient |
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