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General Knowledge :: Chemistry

  1. Carborundum is another name of

  2. A.

     Silicon carbide

    B.

     Silicon oxide

    C.

     Calcium carbide

    D.

     Calcium oxide

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  3. German silver is an alloy of

  4. A.

     Copper, nickel and silver

    B.

     Silver, copper and aluminium

    C.

     Zinc, copper and nickel

    D.

     Zinc, silver and copper

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  5. Which one of the following does not contain Silver ?

  6. A.

     Ruby Silver

    B.

     Lunar Caustic

    C.

     German Silver

    D.

     Horn Silver

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  7. Type metal used in printing press is an alloy of

  8. A.

     Lead and copper

    B.

     Lead and antimony

    C.

     Lead and bismuth

    D.

     Lead and zinc

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  9. Ultra purification of a metal is done by :

  10. A.

     Slugging

    B.

     Zone melting

    C.

     Smelting

    D.

     Leaching

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  11. Brass gets discoloured in air due to constant exposure in presence of:

  12. A.

     Aluminium phosphide

    B.

     Hydrogen sulphide

    C.

     Hydrogenated wafers

    D.

     Aluminium sulphide

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  13. Which of the following is not present in German silver?

  14. A.

     Copper

    B.

     Nickel

    C.

     Silver

    D.

     Zinc

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  15. Haloarenes are more stable than haloalkanes due to

  16. A.

     Resonance effect

    B.

     Inductive effect

    C.

     Hyper conjugative effect

    D.

     All of them

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  17. The unit of ionic product of water (Kw) is :

  18. A.

     Mol2 let-1

    B.

     Mol2 let-2

    C.

     Mol-1 let-2

    D.

     Mol-1 let-1

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  19. Aluminium chloride is

  20. A.

     Bronsted Lowry Acid

    B.

     Arrhenius Acid

    C.

     Lewis Acid

    D.

     Lewis Base

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