Building Materials Objective Questions - Set 22 - ObjectiveBooks

Building Materials Objective Questions - Set 22

Practice Test: Question Set - 22

1. The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner are known as
    (A) Knots
    (B) Rindgalls
    (C) Burls
    (D) None of these

2. Bitumen completely dissolves in
    (A) Carbon bisulphide
    (B) Chloroform
    (C) Coal tar
    (D) All of these

3. A stone is rejected if it absorbs water more than
    (A) 5 %
    (B) 10 %
    (C) 15 %
    (D) 20 %

4. The most commonly used synthetic abrasive is
    (A) Aluminium carbide
    (B) Boric acid
    (C) Silicon
    (D) All of these

5. During smelting process, the combination of fuel in the furnace
    (A) Forms carbon dioxide
    (B) Carbon dioxide with carbon forms carbon mono-oxide
    (C) Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2
    (D) All the above

6. According to ISI, bitumen is classified into
    (A) 2 grades
    (B) 4 grades
    (C) 8 grades
    (D) 10 grades

7. Basalt is
    (A) Sedimentary rock
    (B) Metamorphic rock
    (C) Extrusive igneous rock
    (D) Intrusive igneous rock

8. The size of mould for bricks, is generally kept
    (A) A little large to specified size
    (B) A little small to specified size
    (C) Equal to specified size
    (D) 10% larger than specified size

9. For construction of structures under water, the type of lime used, is
    (A) Hydraulic lime
    (B) Fat lime
    (C) Quick lime
    (D) Pure lime

10. French polish is
    (A) Oil paint
    (B) Distemper
    (C) Spirit varnish
    (D) None to these

11. Ultimate strength to cement is provided by
    (A) Tri-calcium silicate
    (B) Di-calcium silicate
    (C) Tri-calcium aluminate
    (D) Tetra calcium alumino ferrite

12. Wrought iron contains carbon about
    (A) 1.5% to 5.5%
    (B) 0.5% to 1.75%
    (C) 0.1% to 0.25%
    (D) None to these

13. Galvanising means covering iron with a thin coat of
    (A) Tin
    (B) Zinc
    (C) Glaze
    (D) Coal tar

14. The rocks in which argil (or clay) predominates, are called
    (A) Siliceous rocks
    (B) Argillaceous rocks
    (C) Calcareous rocks
    (D) Igneous rocks

15. Name the type of cement from the following for canal linings:
    (A) Sulphate resisting cement
    (B) Rapid hardening cement
    (C) Quick setting cement
    (D) Pozzolana cement

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