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General Knowledge :: Environmental Science

  1. Which tree is known as Coral tree?

  2. A.

     Quercus

    B.

     Dipterocarps

    C.

     Erythrina

    D.

     Zizypus


  3. The components of LPG are _____________

  4. A.

     Methane & Hexane

    B.

     Propane & Butane

    C.

     Ethane & Methane

    D.

     Propane & Ethane


  5. Biogas is composed of

  6. A.

     methane, carbon dioxide, nitrogen and hydrogen

    B.

     carbon dioxide, nitrogen and hydrogen

    C.

     ethane, carbon dioxide, nitrogen and hydrogen

    D.

     methane, carbon dioxide, nitrogen and sulphur


  7. _________ mixed with diesel reduces carbon monoxide emissions up to 50%.

  8. A.

     Methanol

    B.

     Alcohol

    C.

     Ethanol

    D.

     Phenol


  9. Fungi is/are

  10. A.

     single-celled prokaryotes

    B.

     Phototrophic eukaryotes

    C.

     Eukaryotes single-celled and primitive multi-celled organisms

    D.

     heterotrophic eukaryotes


  11. In an aquatic ecosystem, the depth to which light penetrates is called

  12. A.

     aphotic

    B.

     photic

    C.

     euphotic

    D.

     nonphotic


  13. Algal bloom results in

  14. A.

     Global warming

    B.

     Salination

    C.

     Eutrophication

    D.

     Biomagnification


  15. The maximum in daytime surface temperature typically occurs _______ the earth receives its most intense solar radiation.

  16. A.

     Before

    B.

     After

    C.

     Exactly when

    D.

     Long time


  17. The resources that can be replaced by natural ecological cycle is called

  18. A.

     Renewable

    B.

     non-renewable

    C.

     exhaustible

    D.

     natural


  19. The portion of the earth and its environment which can support life is known as _________

  20. A.

     Crust

    B.

     Biosphere

    C.

     Exosphere

    D.

     atmosphere