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Civil Engineering :: Building Materials

  1. The commonly used thinner in oil paints, is

  2. A.

    naptha

    B.

    turpentine

    C.

    both (a) and (b)

    D.

    neither (a) nor (b)

    E.

    none the these.

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  3. Cast iron
  4. A.

    is obtained by purifying pig iron

    B.

    is manufactured in required shapes

    C.

    may contain 2 to 5 per cent of carbon with other impurities

    D.

    is remelted in a cupola furnace

    E.

    all the above.

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  5. Asbestos is

  6. A.

    corrugated sheet used for roofing

    B.

    an incombustible fire proof material

    C.

    an organic substance

    D.

    a bad insulator for sound and heat

    E.

    all the above.

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  7. In a rock calcium carbonate predominates. State whether it is :

  8. A.

    Sillicious rock

    B.

    Argillaceous rock

    C.

    Calcareous rock

    D.

    None of these.

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  9. In order of increasing percentage of silica, the correct sequence is

  10. A.

    sandy clay, calcareous clay, pure clay

    B.

    calcareous clay, pure clay, sandy clay

    C.

    pure clay, sandy clay, calcareous clay

    D.

    None of these.

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  11. The rocks which are formed due to pouring of magma at the earth's surface are called

  12. A.

    Plutonic rocks

    B.

    Hypabyssal rocks

    C.

    Volcanic rocks

    D.

    Igneous rocks

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  13. Pick up the correct statement from the following:

  14. A.

    Steel produced by open hearth process is milder than that obtained by the bessemer process

    B.

    Engineers prefer open hearth steel for structural purpose as it is more homogenous

    C.

    Basic Bessemer process is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel

    D.

    all the above.

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  15. Pick up the correct statement from the following:

  16. A.

    The distinct plane of division along which a stone can easily be split, is called natural bed of stone

    B.
    The natural bed of sedimentary rocks is along the planes of stratification
    C.

    The natural bed of igneous rocks is not defined

    D.

    All the above.

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  17. Invar contains

  18. A.

    12% of nickel

    B.

    24% of nickel

    C.

    30% to nickel

    D.

    36% of nickel.

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  19. Based on flow quality, the sequence of pipes is

  20. A.

    A.C. pipes, G.I. pipes, C.I. pipes, PVC pipes

    B.

    C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes

    C.

    C.I. pipes, G.I. pipes, PVC pipes, A.C. pipes

    D.

    None of these.

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