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Building Materials - section-9
  1. A first class brick when immersed in cold water for 24 hours should not absorb water more than

    2. A.

     15 %
    B.

     20 %
    C.

     22 %
    D.

     25 %

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  2. A good building stone should not absorb water more than

    3. A.

     5 %
    B.

     10 %
    C.

     15 %
    D.

     20 %

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  3. Basalt is

    4. A.

     Sedimentary rock
    B.

     Metamorphic rock
    C.

     Extrusive igneous rock
    D.

     Intrusive igneous rock

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  4. Age of a tree may be ascertained by

    5. A.

     Radius of its stem
    B.

     Circumference of its stem
    C.

     Number of branches
    D.

     Number of annual rings

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  5. Which one of the following is an air binding material?

    6. A.

     Gypsum
    B.

     Acid-resistant cement
    C.

     Quick lime
    D.

     All of these

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  6. Bitumen felt

    7. A.

     Is used as water proofing material
    B.

     Is used as damp proofing material
    C.

     Is made from bitumen and hessian fibres
    D.

     All the above

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  7. Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica

    8. A.

     Basalt and marble are the only metamorphic rocks
    B.

     There is no sedimentary rock
    C.

     Granite is the only igneous rock
    D.

     Quartz and mica are minerals

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  8. Blister steel

    9. A.

     Is obtained by cementation process
    B.

     Is full of fissures and cavities
    C.

     Can be easily welded
    D.

     All the above

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  9. Cast iron contains carbon approximately

    10. A.

     1.5% to 5.5%
    B.

     0.05% to 1.75%
    C.

     0.250 %
    D.

     None to these

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  10. Steel contains carbon approximately

    11. A.

     1.50% to 5.6%
    B.

     0.05% to 1.75%
    C.

     0.25 %
    D.

     None to these

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