choose the option
4. The main constituent of coal is (a) carbon (c) nitrogen 5. Among other things, a good fuel should have a (a) high calorific value (c) high temperature (b) hydrogen (d) oxygen (b) low calorific value (d) low temperature
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Answer:
4.b
5 d
Explanation:
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Answered by
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Answer:
4,carbon,5.high calorific value
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