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General Knowledge :: Chemistry

  1. Seaweeds are important source of

  2. A.

     Iron

    B.

     Chlorine

    C.

     Bromine

    D.

     Iodine


  3. Sea weeds are important source of

  4. A.

     Fluorine

    B.

     Chlorine

    C.

     Bromine

    D.

     Iodine


  5. The strongest oxidizing agent among the following is:

  6. A.

     Chlorine

    B.

     Iodine

    C.

     Fluorine

    D.

     Oxygen


  7. Helium is added to the oxygen supply of deep sea divers because it is

  8. A.

     Less poisonous than nitrogen

    B.

     Lighter than nitrogen

    C.

     Readily miscible with oxygen

    D.

     Less soluble in blood than nitrogen at high pressure


  9. Vulcanization of rubber is carried out by adding

  10. A.

     Sulphur

    B.

     Carbon

    C.

     Ozone

    D.

     Phosphorus


  11. Hamburger effect is otherwise known as–

  12. A.

     Sodium pump

    B.

     Anaerobic metabolism

    C.

     Chloride shift

    D.

     Respiratory product


  13. The inert gas used as beacon light is

  14. A.

     Kr

    B.

     Ar

    C.

     He

    D.

     Ne


  15. The noble gas used in radiotherapy is

  16. A.

     Neon

    B.

     Argon

    C.

     Radon

    D.

     Xenon


  17. Inert gases are

  18. A.

     Miscible with water

    B.

     Not stable

    C.

     Chemically unreactive

    D.

     Chemically very active


  19. Which one of the following does not form oxyacid ?

  20. A.

     Sulphur

    B.

     Chlorine

    C.

     Nitrogen

    D.

     Fluorine