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Civil Engineering :: Building Materials

  1. Le-Chatelier's device is used for determining the

  2. A.

     Setting time of cement

    B.

     Soundness of cement

    C.

     Tensile strength of cement

    D.

     Compressive strength of cement


  3. According to IS 399-1963, the weight of the timber is specified at

  4. A.

     8% moisture content

    B.

     10% moisture content

    C.

     12% moisture content

    D.

     14% moisture content


  5. Spirit varnish generally consists of

  6. A.

     Oil, wax and resin

    B.

     Alcohol, wax and turpentine

    C.

     Pigment and synthetic resin

    D.

     Spirit and shellac


  7. Oil varnish generally consists of

  8. A.

     Synthetic resin and spirit

    B.

     Oil, wax and resin

    C.

     Resin, oil and turpentine

    D.

     Spirit, oil and wax


  9. Plastics are compounds of carbon with element

  10. A.

     Hydrogen

    B.

     Nitrogen

    C.

     Oxygen

    D.

     All of these


  11. The most commonly used retarder in cement is

  12. A.

     Gypsum

    B.

     Calcium chloride

    C.

     Calcium carbonate

    D.

     None of the above


  13. The cement becomes unsound by the presence of excess

  14. A.

     Sulphur

    B.

     Magnesia

    C.

     Lime

    D.

     All of these


  15. Resins are

  16. A.

     Not soluble in water

    B.

     Soluble in spirit

    C.

     Used in varnishes

    D.

     Left behind on evaporation of oil


  17. Which of the following ingredients of the brick earth enables the brick to retain its shape?

  18. A.

     Alumina

    B.

     Silica

    C.

     Iron

    D.

     Magnesia


  19. Strength of cement concrete primarily depends upon

  20. A.

     Quality of water

    B.

     Quantity of aggregate

    C.

     Quantity of cement

    D.

     Water-cement ratio