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0.50 gm of kerosene on complete combustion supplies heat energy to 1kg of water at 15°celcius,such that final temperature recorded is 20°celcius.calculate the calorific value of kerosene oil.

calorific value of coal is 25 j/g.how much coal should be burnt per second to generate 12500kw of power
2 5 2
but,we dont have numerical sums based on calorific value
plzzzz try to mark as the brainliest answer.
give one more
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