Building Materials MCQs Set-12

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

Radial shakes

Heart shakes

Twisted fibres

Wind cracks

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

Forms carbon dioxide

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

All the above

Carbon dioxide with carbon forms carbon mono-oxide

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

Quick lime

Pure lime

Hydraulic lime

Fat lime

4. The rocks formed by gradual deposition, are called

Metamorphic rocks

Igneous rocks

None of these

Sedimentary rocks

5. According to ISI, bitumen is classified into

2 grades

4 grades

10 grades

8 grades

6. Stones used for ornamental work must be

Light

Soft

Heavy

Hard

7. The thermosetting plastic

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

Chars at 343°C

8. Iron ore may contain

All of these

Phosphorus and manganese

Silicon

Carbon

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

15 %

5 %

20 %

10 %

10. Ultimate strength to cement is provided by

Tetra calcium alumino ferrite

Tri-calcium silicate

Di-calcium silicate

Tri-calcium aluminate

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11. Pig iron is manufactured from the ores by

Smelting

All of these

Dressing

Calcination and roasting

12. The most commonly used synthetic abrasive is

All of these

Aluminium carbide

Silicon

Boric acid

13. Cast iron is used for

Columns and struts

Structural works in beams

None of these

Small sized water pipes

14. Plastic

All of these

Consists of natural or synthetic binders

Finished products are rigid and stable at normal temperature

Is an organic substance

15. Snowcrete is one of the patent forms of

Distempers

Cellulose paints

Water proof cement paints

Enamel paints

16. Refractory bricks resist

Dampness

High temperature

All of these

Chemical action

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

Metamorphic rocks

Igneous rocks

None of these

Sedimentary rocks

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

Deal

Strip

Baulk

Cant

19. French polish is

Distemper

Spirit varnish

Oil paint

None to these

20. Galvanising means covering iron with a thin coat of

Tin

Zinc

Coal tar

Glaze

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21. Lime stone is not a

Stratified rock

Metamorphic rock

Sedimentary rock

Aqueous rock

22. Bitumen completely dissolves in

Coal tar

Carbon bisulphide

All of these

Chloroform

23. Turpentine oil is used in paints as

Vehicle

Thinner

Drier

Base

24. Wrought iron contains carbon about

0.5% to 1.75%

None to these

1.5% to 5.5%

0.1% to 0.25%

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

Quick setting cement

Rapid hardening cement

Pozzolana cement

Sulphate resisting cement

26. Jhumb bricks are

Kutcha

Under burnt

None of these

Over burnt

27. Commonly used thinner in

All of these

Oil paints, is naphtha

Lacquer paints, is alcohol

Cellulose paints is ethyl acetate

28. Geologically, marble is known as

Stratified rock

Sedimentary rock

Metamorphic rock

Igneous rock

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

A little small to specified size

10% larger than specified size

Equal to specified size

A little large to specified size

30. Seasoning is

A process of removing sap

Painting with sodium silicate

Coating with tar

Creosoting

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31. Soundness test of cement determines

Ultimate strength

Quality of free lime

Durability

Initial setting

32. Stucco paints are suitable for

(B) Brick walls

(A) Stone masonry

(D) Neither (A) nor (B)

(C) Both (A) and (B)

33. Basalt is

Metamorphic rock

Extrusive igneous rock

Intrusive igneous rock

Sedimentary rock

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

Igneous rocks

Argillaceous rocks

Calcareous rocks

Siliceous rocks

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

Rindgalls

Knots

Burls

None of these

Building Materials MCQs Set-12

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