Write True' or "False' for the following statements.
Statement
1. The ratio of oxygen and nitrogen by volume in air is about 4:1
2. Biomass is common household fuel in rural India.
3. Raw materials for combustion are carbon dioxide and water
4. Coal is used as an industrial fuel.
5. Nitrogen in the air helps in combustion
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Answers
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Answer:
1)True
2)False
3)True
4)True
5)False
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