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Which gas is used in fire extinguishers ?

  • Carbon dioxide
  • Nitrogen oxide
  • Carbon monoxide
  • Sulpher dioxide

Answer: Option A

Similar Questions :

1. Acid rain is due to air pollution by ?

  • Carbon dioxide
  • Carbon monoxide
  • Methane
  • Nitrous oxide and Sulphur dioxide

Answer: Option D

2. Which element found in all organic compounds ?

  • carbon
  • nitrogen
  • calcium
  • none of them

Answer: Option A

3. Which metal is heaviest ?

  • osmium
  • mercury
  • iron
  • nickle

Answer: Option A

4. What is the hardest form of carbon ?

  • coke
  • graphite
  • charcoal
  • diamond

Answer: Option D

5. What is hottest part of the gas flame is called ?

  • blue zone
  • luminous zone
  • dark zone
  • non-luminous zone

Answer: Option D

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