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Civil Engineering :: Building Materials

  1.  

    For a 50 kg cement bag water required, is

  2. A.

    16.5 litres

    B.

    18.5 litres

    C.

    20.5 litres

    D.

    22.5 litres

    E.

    25 litres.


  3. The presence of sand in brick earth prevents:

  4. A.

    cracking of bricks

    B.

    shrinkage of bricks

    C.

    warping of bricks

    D.

    none of these.


  5. The property by virtue of which lime sets under water, is known as

  6. A.

    slacking

    B.

    setting

    C.

    hydraulicity

    D.

    calcining.


  7. Percentage content of silica in window glass, is

  8. A.
    40 to 45
    B.

    50 to 55

    C.

    60 to 65

    D.

    70 to 75.


  9. The coefficient of hardness of stones used in road work should be greater than

  10. A.

    10

    B.

    12

    C.

    15

    D.

    17


  11. Pick up the correct statement from the following:

  12. A.

    Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer

    B.

    Cupola furnace is used for the manufacture of cast iron

    C.

    Red short iron is of no value for welding purpose

    D.

    All the above.


  13. The steel used for the manufacture of rails, is

  14. A.

    Bessemer steel

    B.

    mild steel

    C.

    cast steel

    D.
    stainless steel.

  15. Slump test for concrete is carried out, to determine

  16. A.

    strength

    B.

    durability

    C.

    workability

    D.

    water content.


  17. Basalt is

  18. A.

    sedimentary rock

    B.

    metamorphic rock

    C.

    extrusive igneous rock

    D.

    intrusive igneous rock.


  19. The frog of a brick is normally made on its

  20. A.

    top face

    B.

    bottom face

    C.

    longer face

    D.

    shorter side.