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What is the heating value of 10 Kg of coal with heat of combustion 10 J/Kg?(a) -10 J(b) 10 J(c) -100 J(d) 100 J |
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Answer» Correct choice is (c) -100 J For explanation I would say: Heating value = – Heat of combustion = -10*10 = -100 J. |
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