Building Materials MCQs Set-10

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1. Polymerization helps to improve the property of

All of these

Elasticity

Strength

Rigidity

2. Expanded metal is

Measured in term of SWM (short way mesh) and LWM (long way mesh)

All of these

Manufactured from steel sheets

Used for reinforced concrete in road pavements

3. Rapid hardening cement contains

Tri-calcium aluminate

Tetra-calcium alumino-ferrite

Di-calcium silicate

Tri-calcium silicate

4. Lacquer is

None of these

Spirit varnish

Oil paint

Distemper

5. The timber having maximum resistance against white ants, is obtained from

Chir

Teak

Sal

Shishum

6. The cement becomes unsound by the presence of excess

Sulphur

Lime

Magnesia

All of these

7. The stones obtained by blasting are used as

Aggregates for concrete

Road metal

Ballast in railways

All of these

8. The frog of the brick in a brick masonry is generally kept on

Top face

Longer side

Shorter side

Bottom face

9. In order of increasing percentage of silica, the correct sequence is

Calcareous clay, pure clay, sandy clay

Sandy clay, calcareous clay, pure clay

Pure clay, sandy clay, calcareous clay

None of these

10. The portion of the brick without a triangular corner equal to half the width and half the length, is called

Closer

King closer

Squint brick

Queen closer

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11. The percentage of water for normal consistency, is

20% to 30%

5% to 15%

10% to 25%

15% to 25%

12. If water required for 1 bag of cement is 30 liters, the water cement ratio is :

0.60

0.50

0.40

None of these

13. Plaster of Paris is obtained by calcining

Lime stone

None of these

Gypsum

Bauxite

14. The maximum quantity of calcium chloride used as an accelerator in cement in percentage by weight of cement is

2

3

1

4

15. Cement is said to be of good quality if

A handful of cement thrown into a bucket of water does not float

None of these

Its color is not greenish grey

One feels cool by thrusting one's hand in the cement bag

16. Mastic asphalt is

Fire proof

Elastic

Water proof

All of these

17. The normal consistency of ordinary Portland cement is about

20 %

10 %

40 %

30 %

18. The most commonly used base for timber painting, is

White lead

Titanium white

Red lead

Zinc white

19. Quartzite, a metamorphic stone is

Brittle

Crystalline

Hard

All of these

20. For filling cracks in masonry structures, the type of bitumen used, is

Plastic bitumen

Blown bitumen

Cut-back bitumen

Bitumen-emulsion

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21. Which one of the following polymers is obtained from condensation polymerization?

Carbamide

All of these

Melamine-formaldehyde

Phenol formaldehyde

22. The plastics made from cellulose resin

Possess excellent electrical properties

All of these

Are as clear as glass

Are tough and strong

23. The type of steel used for precision levelling staff, is

Invar

Carbon steel

Titanium steel

Stainless steel

24. The moisture content in a well seasoned timber is

100 %

15 % to 20 %

4 % to 6 %

10 % to 12 %

25. Manganese steels

All of these

Are non-magnetic

Possess low coefficient of expansion

Possess high electrical resistance

26. The portion of a brick cut to form angles other than right angles in plan, is known as

Closer

Queen closer

King closer

Squint brick

27. For obtaining vinyl chloride acetate, the method used, is

Condensation polymerization

None of these

Addition polymerization

Co-polymerization

28. Wrought iron is used for

None of these

Structural works in beams

Columns and struts

Small sized water pipes

29. For one cubic metre of brick masonry, number of bricks required, is

500

450

425

400

30. The process of mixing clay, water and other ingredients to make brick is known as

Kneading

Drying

Moulding

Pugging

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31. Formula for quick lime, is

CO3CO2

Ca(OH)₂

CaCO₃

None to these

32. Which of the following timbers is suitable for making sports goods?

Mahogany

Sal

Deodar

Mulberry

33. A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called

Slate

Plank

Strip

Board

34. The silica is used for preparing

Silica bricks

Lining for glass furnaces

All of these

Coke oven

35. Whitworth compressed steel is obtained when molten steel is subjected to a pressure of

9 kg/mm^2

13 kg/mm^2

5 kg/mm^2

15 kg/mm^2

36. Pick up the plutonic rock from the following:

Granite

All of these

Basalt

Dolerite

37. The coefficient of hardness of stones used in road work should be greater than

17

10

12

15

38. The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called

Open hearth process

Cementation process

Bessemer process

Crucible process

39. Priming consists of

None to these

One part of white lead, 8 parts of chalk and one part of linseed oil

One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil

8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil

40. Duco is one of the patent forms of

Cellulose paints

Plastic paints

Bituminous paints

Emulsion paints

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41. Quartzite is a

Argillaceous rock

Calcareous rock

Metamorphic rock

Siliceous rock

Building Materials MCQs Set-10

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