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Explain the following: Use of CO2 in fi...

Explain the following:
Use of `CO_2` in fire extinguisher.

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NAVNEET PUBLICATION-CARBON: AN IMPORTANT ELEMENT-EXERCISE
  1. Explain the following: Petrol, diesel, coal are fossil fuels.

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  2. Explain the following: Uses of various allotropes of carbon.

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  3. Explain the following: Use of CO2 in fire extinguisher.

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  4. Practical uses of CO2.

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  5. Give Scientific reasons: Graphite is a good conductor of electriciity.

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  6. Give scientific reasons: Graphite is not used in ornaments.

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  7. Limewater turns milky when CO2 is passed through it.

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  8. Give scientific reasons: Diamonds are used in rock drilling machines.

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  9. Give scientific reasons: Coke produces more heat than coal.

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  10. Give scientific reasons: Biogas is an eco-friendly fuel.

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  11. Give scientific reasons: Carbon dioxide is used in fire extinguishers...

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  12. Give scientific reasons: Methane is used as fuel.

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  13. Give the scientific reasons: The valency of carbon is 4.

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  14. Use your brain power Is the density CO2 more or less than that of air...

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  15. Distingusih between crystalline and amorphous solids.

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  16. Distinguish between Diamond and Graphite.

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  17. Describe the following chemical reactions giving their balanced equati...

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  18. Explain the following reactions with the help of balanced equations: ...

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  19. Explain the following reaction giving their balanced chemical equation...

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  20. Give balanced equation Methane burnt in air

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