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General Knowledge :: Chemistry

  1. Which one of the following group of gases contributes to the 'Green House Effect'?

  2. A.

     Carbon dioxide and Methane

    B.

     Ammonia and Ozone

    C.

     Carbon monoxide and Sulphur dioxide

    D.

     Carbon tetraflouride and Nitrous oxide


  3. Black lung disease occurs in people working in

  4. A.

     Electroplating industry

    B.

     Organic solvents industry

    C.

     Paint manufacturing industry

    D.

     Coal mines


  5. The least preferred technique in the disposal of Municipal Solid Waste is

  6. A.

     Incineration

    B.

     Composting

    C.

     Land filling

    D.

     Bricketting


  7. Which one of the following was used as a chemical weapon in the first world war ?

  8. A.

     Carbon monoxide

    B.

     Hydrogen cyanide

    C.

     Mustard gas

    D.

     Water gas


  9. The depletion of ozone layer is due to

  10. A.

     Chlorofluorocarbons

    B.

     Carbon dioxide

    C.

     Sulphur dioxide

    D.

     Ethane


  11. Ozone depletion in the atmosphere is mainly caused by

  12. A.

     Sulphur dioxide

    B.

     Nitrogen dioxide

    C.

     Hydrogen sulphide

    D.

     Chlorofluorocarbon


  13. Ozone depletion in the stratosphere is mainly caused by

  14. A.

     SO2

    B.

     NO2

    C.

     NO

    D.

     Chlorofluorocarbons


  15. Which of the following is not a gaseous air pollutant?

  16. A.

     Oxides of nitrogen

    B.

     Hydrocarbon

    C.

     Smoke

    D.

     Oxides of sulphur


  17. Which of the following is ozone depleting pesticide ?

  18. A.

     D.D.T.

    B.

     Benzene

    C.

     Methyl bromide

    D.

     Ethylene ozonide


  19. Threshold limit value of copper in the atmospheric air is

  20. A.

     0.001 mg/m3

    B.

     0.01 mg/m3

    C.

     1.0 mg/m3

    D.

     5.0 mg/m3