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Civil Engineering :: Building Materials

  1. The type of steel used for precision levelling staff, is

  2. A.

     Titanium steel

    B.

     Carbon steel

    C.

     Invar

    D.

     Stainless steel


  3. Veneering means

  4. A.

     Carving out designs on timber planks

    B.

     Chemically treating timber planks

    C.

     Thick layer of superior wood glued to inferior wood

    D.

     Thin layer of superior wood glued to inferior wood


  5. Good quality sand is never obtained from

  6. A.

     River

    B.

     Lake

    C.

     Sea

    D.

     Gravel powder


  7. Water paint is a

  8. A.

     White wash

    B.

     Color wash

    C.

     Whiting

    D.

     All the above


  9. A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than

  10. A.

     10 %

    B.

     15 %

    C.

     20 %

    D.

     25 %


  11. The commonly used lime in white washing, is

  12. A.

     White lime

    B.

     Fat lime

    C.

     Hydraulic lime

    D.

     Quick lime


  13. Plywood is made from

  14. A.

     Common timber

    B.

     Bamboo fibre

    C.

     Teak wood only

    D.

     Asbestos sheets


  15. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as

  16. A.

     Quick setting cement

    B.

     Rapid hardening cement

    C.

     White cement

    D.

     Low heat Portland cement


  17. Bitumen may be dissolved in

  18. A.

     Carbondioxide

    B.

     Water

    C.

     Sodium chloride

    D.

     Carbon disulphide


  19. The percentage of alumina and silica in good fire clay vary respectively is

  20. A.

     25, 75

    B.

     30, 70

    C.

     35, 65

    D.

     All of these