Which of the following substance is generally used as a fuel?
A
Sodium
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B
Carbon
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C
Lithium
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D
Aluminium
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Solution
The correct option is B
Carbon
Carbon is generally used as a fuel as carbon has a high calorific value, and it heats up fast.Most common fuels are either entirely composed of carbon or are carbon based fuels. E.g. coal, coke, CNG