Building Materials MCQs Set-12

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

Igneous rocks

Siliceous rocks

Argillaceous rocks

Calcareous rocks

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

Carbon dioxide with carbon forms carbon mono-oxide

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

Forms carbon dioxide

All the above

3. According to ISI, bitumen is classified into

10 grades

8 grades

4 grades

2 grades

4. 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

Deal

Cant

Baulk

5. Turpentine oil is used in paints as

Thinner

Vehicle

Base

Drier

6. Basalt is

Metamorphic rock

Extrusive igneous rock

Sedimentary rock

Intrusive igneous rock

7. Commonly used thinner in

Lacquer paints, is alcohol

All of these

Oil paints, is naphtha

Cellulose paints is ethyl acetate

8. Iron ore may contain

Silicon

All of these

Phosphorus and manganese

Carbon

9. Jhumb bricks are

None of these

Over burnt

Under burnt

Kutcha

10. Stones used for ornamental work must be

Soft

Heavy

Light

Hard

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11. Ultimate strength to cement is provided by

Tri-calcium silicate

Di-calcium silicate

Tri-calcium aluminate

Tetra calcium alumino ferrite

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

A little large to specified size

Equal to specified size

A little small to specified size

10% larger than specified size

13. The rocks formed by gradual deposition, are called

Igneous rocks

Sedimentary rocks

None of these

Metamorphic rocks

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

Quick lime

Fat lime

Hydraulic lime

Pure lime

15. Plastic

Consists of natural or synthetic binders

Finished products are rigid and stable at normal temperature

All of these

Is an organic substance

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

None of these

Knots

Burls

Rindgalls

17. Soundness test of cement determines

Quality of free lime

Durability

Initial setting

Ultimate strength

18. Lime stone is not a

Metamorphic rock

Stratified rock

Sedimentary rock

Aqueous rock

19. Cast iron is used for

None of these

Small sized water pipes

Structural works in beams

Columns and struts

20. Geologically, marble is known as

Stratified rock

Metamorphic rock

Sedimentary rock

Igneous rock

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21. The most commonly used synthetic abrasive is

Silicon

Boric acid

All of these

Aluminium carbide

22. The thermosetting plastic

Chars at 343°C

All of these

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

23. Seasoning is

Coating with tar

Creosoting

A process of removing sap

Painting with sodium silicate

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

Quick setting cement

Pozzolana cement

Rapid hardening cement

Sulphate resisting cement

25. Galvanising means covering iron with a thin coat of

Coal tar

Zinc

Tin

Glaze

26. Snowcrete is one of the patent forms of

Cellulose paints

Distempers

Water proof cement paints

Enamel paints

27. Refractory bricks resist

Chemical action

High temperature

All of these

Dampness

28. Bitumen completely dissolves in

All of these

Chloroform

Carbon bisulphide

Coal tar

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

20 %

5 %

15 %

10 %

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

Heart shakes

Wind cracks

Twisted fibres

Radial shakes

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31. Stucco paints are suitable for

(B) Brick walls

(D) Neither (A) nor (B)

(A) Stone masonry

(C) Both (A) and (B)

32. French polish is

Oil paint

Distemper

Spirit varnish

None to these

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

Sedimentary rocks

None of these

Metamorphic rocks

Igneous rocks

34. Pig iron is manufactured from the ores by

All of these

Calcination and roasting

Smelting

Dressing

35. Wrought iron contains carbon about

0.1% to 0.25%

1.5% to 5.5%

0.5% to 1.75%

None to these

Building Materials MCQs Set-12

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