Building Materials MCQs Set-12

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1. Soundness test of cement determines

Durability

Ultimate strength

Initial setting

Quality of free lime

2. Geologically, marble is known as

Sedimentary rock

Stratified rock

Metamorphic rock

Igneous rock

3. Turpentine oil is used in paints as

Thinner

Vehicle

Drier

Base

4. Galvanising means covering iron with a thin coat of

Coal tar

Tin

Glaze

Zinc

5. Cast iron is used for

None of these

Columns and struts

Small sized water pipes

Structural works in beams

6. Basalt is

Metamorphic rock

Intrusive igneous rock

Extrusive igneous rock

Sedimentary rock

7. Iron ore may contain

Phosphorus and manganese

Silicon

All of these

Carbon

8. Stucco paints are suitable for

(A) Stone masonry

(C) Both (A) and (B)

(B) Brick walls

(D) Neither (A) nor (B)

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

A little large to specified size

A little small to specified size

Equal to specified size

10% larger than specified size

10. The thermosetting plastic

Becomes rigid when moulded at suitable pressure and temperature

Chars at 343°C

All of these

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

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11. Commonly used thinner in

All of these

Cellulose paints is ethyl acetate

Lacquer paints, is alcohol

Oil paints, is naphtha

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

Siliceous rocks

Igneous rocks

Argillaceous rocks

Calcareous rocks

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

None of these

Igneous rocks

Metamorphic rocks

Sedimentary rocks

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

15 %

20 %

10 %

5 %

15. Jhumb bricks are

None of these

Under burnt

Kutcha

Over burnt

16. Ultimate strength to cement is provided by

Tetra calcium alumino ferrite

Di-calcium silicate

Tri-calcium aluminate

Tri-calcium silicate

17. Bitumen completely dissolves in

Chloroform

Coal tar

Carbon bisulphide

All of these

18. According to ISI, bitumen is classified into

10 grades

2 grades

8 grades

4 grades

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

Sulphate resisting cement

Quick setting cement

Pozzolana cement

Rapid hardening cement

20. Snowcrete is one of the patent forms of

Enamel paints

Water proof cement paints

Distempers

Cellulose paints

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21. Plastic

Finished products are rigid and stable at normal temperature

Consists of natural or synthetic binders

Is an organic substance

All of these

22. Lime stone is not a

Stratified rock

Sedimentary rock

Metamorphic rock

Aqueous rock

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

Cant

Baulk

Strip

Deal

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

Twisted fibres

Heart shakes

Radial shakes

Wind cracks

25. 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

None of these

Burls

26. Wrought iron contains carbon about

1.5% to 5.5%

None to these

0.1% to 0.25%

0.5% to 1.75%

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

Fat lime

Hydraulic lime

Pure lime

Quick lime

28. Seasoning is

Creosoting

Coating with tar

A process of removing sap

Painting with sodium silicate

29. Refractory bricks resist

High temperature

Dampness

All of these

Chemical action

30. The rocks formed by gradual deposition, are called

Metamorphic rocks

None of these

Sedimentary rocks

Igneous rocks

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

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

All the above

Forms carbon dioxide

Carbon dioxide with carbon forms carbon mono-oxide

32. The most commonly used synthetic abrasive is

Silicon

Boric acid

All of these

Aluminium carbide

33. Stones used for ornamental work must be

Heavy

Soft

Hard

Light

34. Pig iron is manufactured from the ores by

Dressing

All of these

Smelting

Calcination and roasting

35. French polish is

Spirit varnish

Oil paint

Distemper

None to these

Building Materials MCQs Set-12

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