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Civil Engineering :: Building Materials

  1. French polish is

  2. A.

     Oil paint

    B.

     Distemper

    C.

     Spirit varnish

    D.

     None to these

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  3. If the iron ore contains clay as an impurity, the flux added during calcination, is

  4. A.

     Clay

    B.

     Lime stone

    C.

     Argillaceous iron ore

    D.

     All the above

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  5. Rapid hardening cement contains

  6. A.

     Tri-calcium silicate

    B.

     Tri-calcium aluminate

    C.

     Tetra-calcium alumino-ferrite

    D.

     Di-calcium silicate

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  7. The amount of water used for one kg of distemper is

  8. A.

     0.2 liter

    B.

     0.4 liter

    C.

     0.6 liter

    D.

     0.8 liter

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  9. Granite is not suitable for ordinary building purpose because

  10. A.

     it can not be polished

    B.

     it is not a fire proof material

    C.

     it is costly

    D.

     it has less crushing strength

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  11. The frog of the brick in a brick masonry is generally kept on

  12. A.

     Bottom face

    B.

     Top face

    C.

     Shorter side

    D.

     Longer side

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  13. Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth?

  14. A.

     Lime stone and alumina

    B.

     Silica and alkalies

    C.

     Alumina and iron

    D.

     Alkalies and magnesium

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  15. Gypsum is a

  16. A.

     Mechanically formed sedimentary rock

    B.

     Igneous rock

    C.

     Chemically precipitated sedimentary rock

    D.

     Metamorphic rock

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  17. Excess of alumina in brick earth makes the brick

  18. A.

     Impermeable

    B.

     Brittle and weak

    C.

     To lose cohesion

    D.

     To crack and warp on drying

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  19. A good brick earth should contain:

  20. A.

     About 20% to 30% of alumina

    B.

     About 50% to 60% of silica

    C.

     Not more than 5% of lime

    D.

     All the above

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