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Civil Engineering :: Building Materials

  1. The initial setting time of lime-pozzolana, is

  2. A.

    30 minutes

    B.

    60 minutes

    C.

    90 minutes

    D.

    120 minutes.


  3. The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout

  4. A.

    the monsoon

    B.

    the winter

    C.

    the summer

    D.

    none of these.


  5. The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called

  6. A.

    Plutonic rocks

    B.
    Hypabyssal rocks
    C.

    Volcanic rocks

    D.

    Igneous rocks.


  7. Quartzite is a

  8. A.

    metamorphic rock

    B.

    argillaceous rock

    C.

    calcareous rock

    D.

    silicious rock.


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

  10. A.

    Bessemer pig

    B.

    Grey or foundry pig

    C.

    White forge pig

    D.

    Mottled pig.


  11. Sand stone is

  12. A.

    sedimentary rock

    B.

    metamorphic rock

    C.

    igneous rock

    D.

    volcanic rock.


  13. If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called

  14. A.

    Bessemer pig

    B.

    Grey or foundry pig

    C.
    White or forge pig
    D.

    Mottled pig.


  15. Stainless steel contains

  16. A.

    18% of chromuim and 8% nickel

    B.

    8% of chromium and 18% of nickel

    C.

    12% of chromium and 36% of nickel

    D.

    36% of chromium and 12% of nickel.


  17.  

    Pick up the hypabyssal rock from the following:

  18. A.

    Granite

    B.

    Dolerite

    C.

    Basalt

    D.

    All the above.


  19. Depending on the chemical composition and mechanical properties, iron may be classified as

  20. A.

    cast iron

    B.

    wrought iron

    C.

    steel

    D.

    all the above.