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ഭൗതിക ശാസ്ത്രം
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ഊർജ്ജം
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Energy equivalent of 1 kg of coal
A
9x10 17J
B
9 x 10 16J
C
9 x 10 15J
D
9 x 10 9J
Answer:
B. 9 x 10 16J
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