Building Materials MCQs Set-12

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1. Seasoning is

Coating with tar

A process of removing sap

Painting with sodium silicate

Creosoting

2. Ultimate strength to cement is provided by

Tri-calcium silicate

Di-calcium silicate

Tetra calcium alumino ferrite

Tri-calcium aluminate

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

Pozzolana cement

Quick setting cement

Rapid hardening cement

Sulphate resisting cement

4. Geologically, marble is known as

Metamorphic rock

Stratified rock

Sedimentary rock

Igneous rock

5. Jhumb bricks are

Kutcha

Under burnt

Over burnt

None of these

6. Wrought iron contains carbon about

None to these

0.1% to 0.25%

1.5% to 5.5%

0.5% to 1.75%

7. 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

8. Refractory bricks resist

All of these

Chemical action

High temperature

Dampness

9. Commonly used thinner in

All of these

Cellulose paints is ethyl acetate

Oil paints, is naphtha

Lacquer paints, is alcohol

10. Plastic

Finished products are rigid and stable at normal temperature

Is an organic substance

All of these

Consists of natural or synthetic binders

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11. 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

Rindgalls

Burls

Knots

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

Heart shakes

Twisted fibres

Radial shakes

Wind cracks

13. Stucco paints are suitable for

(D) Neither (A) nor (B)

(B) Brick walls

(C) Both (A) and (B)

(A) Stone masonry

14. Galvanising means covering iron with a thin coat of

Zinc

Coal tar

Tin

Glaze

15. Stones used for ornamental work must be

Hard

Light

Heavy

Soft

16. The rocks formed by gradual deposition, are called

Metamorphic rocks

Igneous rocks

Sedimentary rocks

None of these

17. French polish is

None to these

Spirit varnish

Distemper

Oil paint

18. Turpentine oil is used in paints as

Base

Thinner

Vehicle

Drier

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

Siliceous rocks

Igneous rocks

Argillaceous rocks

Calcareous rocks

20. Cast iron is used for

Columns and struts

None of these

Structural works in beams

Small sized water pipes

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21. Snowcrete is one of the patent forms of

Enamel paints

Distempers

Water proof cement paints

Cellulose paints

22. Iron ore may contain

Silicon

Carbon

All of these

Phosphorus and manganese

23. The thermosetting plastic

Chars at 343°C

All of these

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

Becomes rigid when moulded at suitable pressure and temperature

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

10 %

20 %

5 %

15 %

25. Bitumen completely dissolves in

Chloroform

All of these

Carbon bisulphide

Coal tar

26. 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

All the above

Forms carbon dioxide

27. Pig iron is manufactured from the ores by

Smelting

All of these

Dressing

Calcination and roasting

28. According to ISI, bitumen is classified into

2 grades

4 grades

10 grades

8 grades

29. The most commonly used synthetic abrasive is

Aluminium carbide

All of these

Silicon

Boric acid

30. Soundness test of cement determines

Initial setting

Quality of free lime

Ultimate strength

Durability

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31. Basalt is

Intrusive igneous rock

Sedimentary rock

Extrusive igneous rock

Metamorphic rock

32. Lime stone is not a

Aqueous rock

Sedimentary rock

Stratified rock

Metamorphic rock

33. 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

Cant

Baulk

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

Hydraulic lime

Fat lime

Pure lime

Quick lime

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

Metamorphic rocks

None of these

Igneous rocks

Sedimentary rocks

Building Materials MCQs Set-12

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