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Civil Engineering :: Building Materials

  1. Cast iron contains carbon approximately

  2. A.

    1.5% to 5.5%

    B.

    0.05% to 1.75%

    C.

    0.250%

    D.

    none to these.

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  3. Plastic asphalt is

  4. A.

    used as a water proofing layer over roof

    B.

    a mixture of cement and asphalt

    C.

    a natural asphalt

    D.

    a refinery product.

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  5. For obtaining vinyl chloride acetate, the method used, is

  6. A.

    addition polymerization

    B.
    condensation polymerization
    C.

    co-polymerization

    D.

    none of these.

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  7. The yield strength and tensile strength of low carbon steel may be improved by the addition of

  8. A.

    manganese

    B.

    chromium

    C.

    nickel

    D.

    venadium

    E.

    tungsten.

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  9. Bitumen completely dissolves in

  10. A.

    carbon bisulphide

    B.

    carbon bisulphide

    C.

    benzol

    D.

    coaltar

    E.

    All of these.

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  11.  

    Good quality cement contains higher percentage of

  12. A.

    Tricalcium silicate

    B.

    Di-calcium silicate

    C.

    Tri-calcium aluminate

    D.

    Tetra calcium alumino ferrite

    E.

    all the above.

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  13. Soundness of cement is tested by

  14. A.

    Vicat's apparatus

    B.

    Le-chatelier apparatus

    C.

    compressive strength testing apparatus

    D.

    none of the these.

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  15. The PVC doors and windows are preferred as they are

  16. A.

    rust proof

    B.

    rot proof

    C.

    termile proof

    D.

    water proof

    E.

    all of these.

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  17. Based on its dry weight, a freshly felled tree may contain water

  18. A.

    25%

    B.

    50%

    C.

    75%

    D.

    100%.

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  19. Forge pig may be converted to wrought iron by

  20. A.

    rolling

    B.

    pudding

    C.

    shingling

    D.

    refining.

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