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Civil Engineering :: Building Materials

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Building Materials - Section 6
Building Materials - Section 7
Building Materials - Section 8
Building Materials - section-9

  1. The low voltage porcelain is mainly used for

    2. A.

    switch block
    B.

    insulating tubes
    C.

    lamp sockets
    D.

    All of these.

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  2. Putty is
    3. A.

    made with finely powdered chalk and linseed oil
    B.

    used for fixing glass panes
    C.

    softened by a solution of pearl ash and quick-lime soaked in water
    D.

    all the above.

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  3. The initial setting time of hydraulic lime, is

    4. A.

    30 minutes
    B.

    60 minutes
    C.

    90 minutes
    D.

    120 minutes
    E.

    150 minutes.

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  4. PVC stands for

    5. A.

    plastic very compact
    B.

    polythene vinyl chloride
    C.

    polythene vinyl carbon
    D.

    polythene vanadium carbide.

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  5. Generally wooden moulds are made from

    6. A.

    ply wood
    B.

    shisham wood
    C.

    deodar wood
    D.

    teak wood
    E.

    hard wood.

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  6.  

    Cement paints usually
    7. A.

    contain hydrated lime
    B.

    contain 5% to 10% colour pigments
    C.

    are prepared with white cement
    D.

    contain 5% sodium chloride
    E.

    all the above.

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  7. The cement becomes unsound by the presence of excess

    8. A.

    sulphur
    B.

    magnesia
    C.

    lime
    D.

    All of these.

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  8. The kiln which may work throughout the year, is

    9. A.

    Clamp
    B.

    Bull's kiln
    C.

    Hoffman's kiln
    D.

    none of these.

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  9. The minimum compressive strength of 1st class bricks should be

    10. A.

    75 kg/cm2
    B.

    90 kg/cm2
    C.

    100 kg/cm2
    D.

    120 kg/cm2
    E.

    130 kg/cm2.

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  10. A volatile substance added to a paint to make its application easy and smooth, is known as
    11. A.

    base
    B.

    solvent
    C.

    vehicle
    D.

    none to these.

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