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Civil Engineering :: Building Materials

  1. For a good building stone, its specific gravity should the greater than

  2. A.

     1.5

    B.

     1.7

    C.

     2.2

    D.

     2.7


  3. In arches, stratified stones are placed so that their planes are

  4. A.

     Parallel

    B.

     Perpendicular

    C.

     Radial

    D.

     None of these


  5. Whitworth compressed steel is obtained when molten steel is subjected to a pressure of

  6. A.

     5 kg/mm²

    B.

     9 kg/mm²

    C.

     13 kg/mm²

    D.

     15 kg/mm²


  7. To give a brilliant finish, the type of varnish used, is

  8. A.

     Water varnish

    B.

     Spirit varnish

    C.

     Turpentine varnish

    D.

     Oil varnish


  9. A mortar joint in masonry which is normal to the face of wall is known as

  10. A.

     Bed joint

    B.

     Wall joint

    C.

     Cross joint

    D.

     Bonded joint


  11. Percentage content of silica in window glass, is

  12. A.

     40 to 45

    B.

     50 to 55

    C.

     60 to 65

    D.

     70 to 75


  13. The variety of pig iron used for manufacture of wrought iron, is

  14. A.

     Bessemer pig

    B.

     Grey or foundry pig

    C.

     White forge pig

    D.

     Mottled pig


  15. Quick lime (or caustic lime)

  16. A.

     Is obtained by the calcination of pure lime stone

    B.

     Has great affinity to moisture

    C.

     Is amorphous

    D.

     All the above


  17. The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to

  18. A.

     Grey cast iron

    B.

     White cast iron

    C.

     Mottled cast iron

    D.

     Toughed cast iron


  19. The tendency of a stone is, to split along:

  20. A.

     Texture

    B.

     Fracture

    C.

     Cleavage

    D.

     Structure