GASES MCQs


چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب موٹا ہو جاے گا


Decibel is the unit which can be used to measure the :

  1. Sensation
  2. Intensity of sound pressure
  3. Vision
  4. None

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Which gas is used to make soda water?

  1. Ammonia
  2. Hydrogen
  3. Nitrogen
  4. Carbon Dioxide

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At night Plants Intake :

  1. Carbon Dioxide
  2. Oxygen
  3. Nitrogen
  4. None

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Natural Gas was discovered in Sui,Baluchistan in :

  1. 1951
  2. 1954
  3. 1952
  4. 1950

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Which gas is commonly used in balloons and airships?

  1. Hydrogen
  2. Helium
  3. Carbon dioxide
  4. Hydrogen Sulphide
  5. All of these

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Elements are classified into ___ classes?

  1. 8
  2. 4
  3. 3
  4. 2

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In a refrigerator cooling is produced by

  1. The ice that deposits on the freezer
  2. the evaporation of a volatile liquid
  3. Both of these
  4. None of the above

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Burning fossils fuels produces:

  1. Oxygen
  2. Carbon dioxide
  3. Hydrogen
  4. None of these
  5. All of these

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Conching of chocolate results in:

  1. Improvement of flavour
  2. decline in viscosity
  3. Reduction of microorganisms
  4. colour development

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Carbon Dioxide is ___________ than oxygen.

  1. Heavier
  2. Lighter
  3. Toxic
  4. Slower
  5. None of these

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