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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


  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


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

  6. A.

     Ruby Silver

    B.

     Lunar Caustic

    C.

     German Silver

    D.

     Horn Silver


  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


  9. Ultra purification of a metal is done by :

  10. A.

     Slugging

    B.

     Zone melting

    C.

     Smelting

    D.

     Leaching


  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


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

  14. A.

     Copper

    B.

     Nickel

    C.

     Silver

    D.

     Zinc


  15. Haloarenes are more stable than haloalkanes due to

  16. A.

     Resonance effect

    B.

     Inductive effect

    C.

     Hyper conjugative effect

    D.

     All of them


  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


  19. Aluminium chloride is

  20. A.

     Bronsted Lowry Acid

    B.

     Arrhenius Acid

    C.

     Lewis Acid

    D.

     Lewis Base