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Civil Engineering :: Building Materials

  1. Pick up the correct statement from the following:

  2. A.

    Horn blende mineral is brittle

    B.

    Muscovite is also known as white mica and potashmica

    C.

    Biotite is also known as blackmica

    D.

    All the above.


  3. The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called

  4. A.
    Plutonic rocks
    B.

    Hypabyssal rocks

    C.

    Volcanic rocks

    D.

    Ignoeous rocks.


  5. The base material for distemper, is

  6. A.

    chalk

    B.

    lime

    C.

    lime

    D.

    cement wash.


  7. The thermosetting plastic

  8. A.

    becomes rigid when moulded at suitable pressure and temperature

    B.

    at 127°C to 177°C permanently set and further application of heat does not soften it

    C.

    charrs at 343°C

    D.
    All the above.

  9. Pick up the synthetic resin from the following:

  10. A.

    Malamine resin

    B.

    Phenolic resin

    C.

    Resorcinol resin

    D.
    Urea resin

     

    E.

    All of these.


  11. Slacking of lime is affected by

  12. A.

    keeping it exposed to air

    B.

    immersing the lime in water

    C.

    crushing the lime lumps

    D.

    none of these.


  13. The steel used in R.C.C. work is

  14. A.

    stainless steel

    B.

    mild steel

    C.

    high carbon steel

    D.

    wrought iron.


  15. Mastic asphalt is

  16. A.

    water proof

    B.

    fire proof

    C.

    elastic

    D.

    all the above.


  17. Non acid-resistant asbestos is :

  18. A.

    tremolite asbestos

    B.

    chrysolite abestos

    C.

    amosite absestos

    D.

    none of these.


  19. Stones used for the construction of retaining walls must be

  20. A.
    soft
    B.

    hard

    C.

    light

    D.

    heavy.