C. Name the following.
(ONLY ONE WORD)
1. Fraction of petroleum used in water proofing.
2.Fraction of petroleum used in road surfacing.
3. The best variety of coal.
4. The processed fuel obtained from coal that is rich in carbon content.
5. The formation of black smoke on combustion of fuel.
(ONLY ONE WORD)
1. Fraction of petroleum used in water proofing.
2.Fraction of petroleum used in road surfacing.
3. The best variety of coal.
4. The processed fuel obtained from coal that is rich in carbon content.
5. The formation of black smoke on combustion of fuel.
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