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Civil Engineering :: Building Materials

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Building Materials - Section 7
Building Materials - Section 8
Building Materials - section-9
  1.  

    Stones used for rubble masonry must be
    2. A.

    soft
    B.

    hard
    C.

    light
    D.
    heavy.

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  2. Index number expressing the relative sizes of both coarse and fine aggregates, is called

    3. A.

    proportioning of aggregates
    B.

    fineness modulus
    C.

    grading of aggregates
    D.

    none of these.

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  3. Dolomite is a lime stone which contains carbonate of magnesia upto

    4. A.

    15%
    B.

    20%
    C.

    25%
    D.

    35%
    E.

    45%.

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  4. Priming consists of

    5. A.

    one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
    B.

    8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil
    C.

    one part of white lead, 8 parts of chalk and one part of linseed oil
    D.
    none to these.

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  5. The portion of the brick cut across its width and having its length equal to that of a full brick, is known as

    6. A.

    closer
    B.

    queen closer
    C.

    king closer
    D.

    prince closer
    E.

    none of these.

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  6.  

    Seasoning of timber is done for
    7. A.

    increasing moisture content
    B.

    decreasing moisture content
    C.

    increasing strength of timber
    D.

    none to these.

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  7. Bitumen felt is used for

    8. A.

    water proofing
    B.

    damp proofing
    C.

    both (a) and (b)
    D.

    neither (a) nor (b).

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  8. According to ISI, bitumen is classified into

    9. A.

    2 grades
    B.

    4 grades
    C.
    6 grades
    D.

    8 grades.
    E.
    10 grades.

     

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  9. Lime putty

    10. A.

    is made from hydraulic lime
    B.

    is made by adding lime to water
    C.

    can be used only upto three days
    D.

    may be obtained from drying lime water mix passing through IS sieve No. 300
    E.

    all of above.

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  10. The minimum percentage of silica, alumina and ferric oxide in lime for white washing, is

    11. A.

    20
    B.

    15
    C.

    10
    D.

    5
    E.

    0

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