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Civil Engineering :: Building Materials

  1. The commonly used lime in white washing, is

  2. A.

    white lime

    B.

    fat lime

    C.

    hydraulic lime

    D.

    lime

    E.

    quick lime.

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  3. Shingle is

  4. A.

    decomposed laterite

    B.

    crushed granite

    C.

    water bound pebbles

    D.

    air weathered rock.

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  5. Pick up the plutonic rock from the following:

  6. A.

    Granite

    B.

    Dolerite

    C.

    Basalt

    D.

    All the above.

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  7. The lime which contains mainly calcium oxide and slacks with water, is

  8. A.

    fat lime

    B.

    quick lime

    C.

    hydraulic lime

    D.

    poor lime

    E.

    none of these.

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  9. Seasoning is

  10. A.

    a process of removing sap

    B.

    creosoting

    C.

    painting with sodium silicate

    D.

    coating with tar.

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  11. Inhaling of fly-ash over a long period causes

  12. A.

    silicosis

    B.

    fibrosis of lungs

    C.

    bronchitis

    D.

    pneumonitis

    E.

    All of these.

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  13. Minimum required water cement ratio for a workable concrete, is

  14. A.

    0.30

    B.

    0.40

    C.

    0.50

    D.

    0.60

    E.

    1.0.

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  15. Rocks formed due to alteration of original structure due to heat and excessive pressure are called

  16. A.

    sedimentary rocks

    B.

    igneous rocks

    C.

    metamorphic rocks

    D.

    none of these.

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  17. The compound of Portland cement which contributes to the strength after two to three years is

  18. A.

    Tricalcium silicate

    B.

    Di-calcium silicate

    C.

    Tricalcium aluminate

    D.

    Tetracalcium alumino ferrite.

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  19. For slaking of 10 kg of CaO, the theoretical amount of water is

  20. A.

    2.2 kg

    B.

    1.5 kg

    C.

    3.2 kg

    D.

    None of these.

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