Building Materials MCQs Set-10

Page 1 of 5

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

15

10

17

12

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

Teak

Sal

Shishum

Chir

3. Expanded metal is

Used for reinforced concrete in road pavements

All of these

Manufactured from steel sheets

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

4. The plastics made from cellulose resin

Possess excellent electrical properties

Are as clear as glass

All of these

Are tough and strong

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

Shorter side

Top face

Longer side

Bottom face

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

Crucible process

Bessemer process

Cementation process

Open hearth process

7. Lacquer is

Distemper

None of these

Spirit varnish

Oil paint

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

Closer

Queen closer

King closer

Squint brick

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

400

425

500

450

10. Manganese steels

Are non-magnetic

Possess high electrical resistance

Possess low coefficient of expansion

All of these

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11. Cement is said to be of good quality if

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

Its color is not greenish grey

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

None of these

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

0.50

0.60

None of these

0.40

13. Pick up the plutonic rock from the following:

Basalt

Dolerite

All of these

Granite

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

Drying

Kneading

Pugging

Moulding

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

9 kg/mm^2

15 kg/mm^2

5 kg/mm^2

13 kg/mm^2

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

Phenol formaldehyde

All of these

Melamine-formaldehyde

Carbamide

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

Slate

Board

Plank

Strip

18. The normal consistency of ordinary Portland cement is about

40 %

10 %

20 %

30 %

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

White lead

Zinc white

Titanium white

Red lead

20. The percentage of water for normal consistency, is

20% to 30%

10% to 25%

15% to 25%

5% to 15%

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21. Priming consists of

None to these

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

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

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

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

None of these

Addition polymerization

Co-polymerization

Condensation polymerization

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

4

2

1

3

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

Deodar

Mulberry

Sal

Mahogany

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

Carbon steel

Stainless steel

Invar

Titanium steel

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

King closer

Closer

Squint brick

Queen closer

27. Plaster of Paris is obtained by calcining

None of these

Gypsum

Bauxite

Lime stone

28. Polymerization helps to improve the property of

Rigidity

All of these

Elasticity

Strength

29. Quartzite, a metamorphic stone is

Crystalline

Hard

All of these

Brittle

30. Rapid hardening cement contains

Tri-calcium silicate

Tri-calcium aluminate

Di-calcium silicate

Tetra-calcium alumino-ferrite

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31. Duco is one of the patent forms of

Cellulose paints

Plastic paints

Bituminous paints

Emulsion paints

32. Quartzite is a

Calcareous rock

Metamorphic rock

Siliceous rock

Argillaceous rock

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

Pure clay, sandy clay, calcareous clay

None of these

Sandy clay, calcareous clay, pure clay

Calcareous clay, pure clay, sandy clay

34. The moisture content in a well seasoned timber is

100 %

15 % to 20 %

10 % to 12 %

4 % to 6 %

35. The silica is used for preparing

Coke oven

Lining for glass furnaces

All of these

Silica bricks

36. Mastic asphalt is

Fire proof

Water proof

Elastic

All of these

37. Formula for quick lime, is

CO3CO2

CaCO₃

None to these

Ca(OH)₂

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

Plastic bitumen

Cut-back bitumen

Blown bitumen

Bitumen-emulsion

39. Wrought iron is used for

Structural works in beams

Columns and struts

None of these

Small sized water pipes

40. The cement becomes unsound by the presence of excess

Sulphur

All of these

Magnesia

Lime

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41. The stones obtained by blasting are used as

Aggregates for concrete

All of these

Road metal

Ballast in railways

Building Materials MCQs Set-10

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