Building Materials MCQs Set-12

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1. Basalt is

Sedimentary rock

Extrusive igneous rock

Intrusive igneous rock

Metamorphic rock

2. Pig iron is manufactured from the ores by

Calcination and roasting

Smelting

Dressing

All of these

3. According to ISI, bitumen is classified into

10 grades

2 grades

4 grades

8 grades

4. Bitumen completely dissolves in

Carbon bisulphide

Coal tar

All of these

Chloroform

5. Stucco paints are suitable for

(C) Both (A) and (B)

(B) Brick walls

(D) Neither (A) nor (B)

(A) Stone masonry

6. During smelting process, the combination of fuel in the furnace

Carbon dioxide with carbon forms carbon mono-oxide

Forms carbon dioxide

Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2

All the above

7. The most commonly used synthetic abrasive is

Aluminium carbide

Silicon

Boric acid

All of these

8. Plastic

Is an organic substance

Consists of natural or synthetic binders

Finished products are rigid and stable at normal temperature

All of these

9. Stones used for ornamental work must be

Heavy

Soft

Hard

Light

10. The rocks in which argil (or clay) predominates, are called

Igneous rocks

Argillaceous rocks

Calcareous rocks

Siliceous rocks

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11. Turpentine oil is used in paints as

Base

Vehicle

Thinner

Drier

12. For construction of structures under water, the type of lime used, is

Fat lime

Pure lime

Quick lime

Hydraulic lime

13. Refractory bricks resist

Chemical action

Dampness

All of these

High temperature

14. Seasoning is

Painting with sodium silicate

A process of removing sap

Creosoting

Coating with tar

15. Soundness test of cement determines

Ultimate strength

Durability

Initial setting

Quality of free lime

16. The rocks formed by gradual deposition, are called

None of these

Metamorphic rocks

Sedimentary rocks

Igneous rocks

17. Ultimate strength to cement is provided by

Tri-calcium silicate

Di-calcium silicate

Tri-calcium aluminate

Tetra calcium alumino ferrite

18. Commonly used thinner in

Lacquer paints, is alcohol

Cellulose paints is ethyl acetate

All of these

Oil paints, is naphtha

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

Pozzolana cement

Sulphate resisting cement

Quick setting cement

Rapid hardening cement

20. Cast iron is used for

None of these

Small sized water pipes

Columns and struts

Structural works in beams

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21. The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:

Twisted fibres

Radial shakes

Wind cracks

Heart shakes

22. Wrought iron contains carbon about

0.1% to 0.25%

1.5% to 5.5%

0.5% to 1.75%

None to these

23. The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner are known as

Rindgalls

None of these

Knots

Burls

24. French polish is

None to these

Spirit varnish

Oil paint

Distemper

25. The thermosetting plastic

Chars at 343°C

Becomes rigid when moulded at suitable pressure and temperature

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

All of these

26. A stone is rejected if it absorbs water more than

20 %

5 %

10 %

15 %

27. Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a

Strip

Baulk

Deal

Cant

28. Snowcrete is one of the patent forms of

Distempers

Cellulose paints

Enamel paints

Water proof cement paints

29. Iron ore may contain

Silicon

Carbon

All of these

Phosphorus and manganese

30. Rocks formed due to alteration of original structure due to heat and excessive pressure are called

Metamorphic rocks

None of these

Sedimentary rocks

Igneous rocks

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31. Lime stone is not a

Stratified rock

Sedimentary rock

Aqueous rock

Metamorphic rock

32. The size of mould for bricks, is generally kept

Equal to specified size

10% larger than specified size

A little small to specified size

A little large to specified size

33. Geologically, marble is known as

Igneous rock

Sedimentary rock

Stratified rock

Metamorphic rock

34. Jhumb bricks are

Kutcha

None of these

Over burnt

Under burnt

35. Galvanising means covering iron with a thin coat of

Tin

Coal tar

Zinc

Glaze

Building Materials MCQs Set-12

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