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  1. An alloy used in making heating elements for electric heating device is

  2. A.

     Solder

    B.

     Alloy Steel

    C.

     Nichrome

    D.

     German Silver

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  3. Which of the following is an iron ore ?

  4. A.

     Bauxite

    B.

     Magnetite

    C.

     Lignite

    D.

     Nitrite

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  5. The important metal used with iron to produce stainless steel is

  6. A.

     Aluminium

    B.

     Chromium

    C.

     Tin

    D.

     Carbon

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  7. Which of the following metals form an amalgam with other metals ?

  8. A.

     Lead

    B.

     Tin

    C.

     Zinc

    D.

     Mercury

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  9. ________ gives hardness to stainless steel.

  10. A.

     Zinc

    B.

     Lead

    C.

     Carbon

    D.

     Tin

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  11. Bauxite is used as raw material by which industry ?

  12. A.

     Aluminium

    B.

     Iron

    C.

     Steel

    D.

     Gold

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  13. Brass contains

  14. A.

     Copper and Zinc

    B.

     Copper and Tin

    C.

     Copper and Silver

    D.

     Copper and Nickel

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  15. Brass is a

  16. A.

     Compound

    B.

     Element

    C.

     Homogeneous mixture

    D.

     Heterogeneous mixture

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  17. Brass is an alloy of

  18. A.

     Lead and tin

    B.

     Zinc and copper

    C.

     Antimony, tin and lead

    D.

     Zinc, tin and copper

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  19. Brass is an alloy of :

  20. A.

     Cu, Al and Zn

    B.

     Cu and Sn

    C.

     Cu and Zn

    D.

     Al and Mg

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