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General Knowledge :: Chemistry

  1. Entropy of Universe is always

  2. A.

     Decreasing

    B.

     Zero

    C.

     Constant

    D.

     Increasing


  3. In a reaction of the type A+B -> C+D one could ensure it to be a first order reaction by :

  4. A.

     Increasing the temperature

    B.

     Increasing the concentration of a product

    C.

     Increasing the concentration of a reactant

    D.

     Adding a catalyst


  5. Kinetics is the study of:

  6. A.

     The rate of chemical reaction

    B.

     How fast the reactions go

    C.

     The mechanisms and paths of the molecules take in joining from one reactant to products

    D.

     All of these are correct


  7. Bhopal gas tragedy is associated with leakage of

  8. A.

     Carbon dioxide

    B.

     Nitrogen dioxide

    C.

     Sulphur dioxide

    D.

     Methyl isocyanate


  9. The function of sedimentation tank in sewage treatment is to:

  10. A.

     Disinfect the sewage

    B.

     Remove water content

    C.

     Aerate the sewage

    D.

     Remove suspended solids


  11. Ferrous sulphate is used in water treatment as a/an

  12. A.

     Oxidizing agent

    B.

     Reducing agent

    C.

     Coagulant aid

    D.

     Adsorbent


  13. Charcoal is used in water treatment as a/an

  14. A.

     Absorbent

    B.

     Coagulant

    C.

     Solvent

    D.

     Adsorbent


  15. Which of the following is a secondary pollutant ?

  16. A.

     NO

    B.

     CO

    C.

     SO2

    D.

     PAN


  17. Ultraviolet radiation striking the earth is due to the depletion of

  18. A.

     Carbon monoxide

    B.

     Carbon dioxide

    C.

     Ozone

    D.

     Oxygen


  19. Many people died in London in 1952 as result of air pollution producing

  20. A.

     Mist

    B.

     Fog

    C.

     Smog

    D.

     Sleet