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Civil Engineering :: Building Materials

  1. Pick up the correct statement from the following:

  2. A.

     The substance which consists of one primary chemical, is known as monomer

    B.

     The polymer consists of thousands of monomers joined together

    C.

     The polymer molecule is called macro-molecule

    D.

     All the above


  3. Pick up the correct statement from the following:

  4. A.

     The theory of formation of concrete is based on the phenomena of formation of voids

    B.

     The bulking of sand is taken into account while volumetric proportioning of the aggregates

    C.

     The dry sand and the sand completely flooded with water, have practically the same volume

    D.

     All the above


  5. Pick up the synthetic resin from the following:

  6. A.

     Urea resin

    B.

     Phenolic resin

    C.

     Resorcinol resin

    D.

     All of these


  7. Specific gravity for most of the building stones lies between

  8. A.

     1.5 to 2.0

    B.

     2.0 to 2.5

    C.

     2.5 to 3.0

    D.

     3.0 to 3.5


  9. For melting one tonne of cast iron

  10. A.

     700 m3 air is required

    B.

     20 kg limestone is required

    C.

     One quintal coke is required

    D.

     All the above


  11. A volatile substance added to a paint to make its application easy and smooth, is known as

  12. A.

     Base

    B.

     Solvent

    C.

     Vehicle

    D.

     None to these


  13. Name the type of cement from the following for canal linings:

  14. A.

     Sulphate resisting cement

    B.

     Rapid hardening cement

    C.

     Quick setting cement

    D.

     Pozzolana cement


  15. Study the following statements.
    (i) Hydraulic lime is suitable for white washing,
    (ii) Fat lime is suitable for whitewashing,
    (iii) Hydraulic lime is suitable for making mortar,
    (iv) Fat lime is suitable for making mortar.

  16. A.

     (i) and (iv)

    B.

     (ii) and (iii)

    C.

     (i) and (ii)

    D.

     (iii) and (iv)


  17. The commonly used drying oil for oil paints, is

  18. A.

     Olive oil

    B.

     Linseed oil

    C.

     Kerosene oil

    D.

     Acetate of lead


  19. Formula for quick lime, is

  20. A.

     CaCO₃

    B.

     Ca(OH)₂

    C.

     CO₃CO₂

    D.

     None to these