1 kg coal is burnt to produce 10000 cal ...

1 kg coal is burnt to produce 10000 cal of heat. A tank 10 m high is filled with 1000 L of water by an engine. If the engine uses 20% of the heat produced form coal, how much coal will be required?

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The correct Answer is:

11.67 kg

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CHHAYA PUBLICATION-FIRST AND SECOND LAW OF THERMODYNAMICS-Exercise - Hots Numerical Problems (Marks 3/4/5)

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