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Question

Mention one use of CNG. Discuss one each of the harmful effects of methanol and ethanol. [1+2]

WBBSE Class X Physical Science Organic Chemistry 03 Mark 2025

Answer

Use of CNG

  • Compressed Natural Gas (CNG) is used as a clean fuel in automobiles because it produces less air pollution.

Harmful Effects

(i) Methanol: (a) Highly poisonous. (b) Consumption may cause blindness or even death.

(ii) Ethanol: (a) Excessive consumption affects the brain and liver. (b) It can lead to addiction and impaired judgment.

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