Building Materials MCQs Set-10

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1. The percentage of water for normal consistency, is

15% to 25%

20% to 30%

5% to 15%

10% to 25%

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

Co-polymerization

Condensation polymerization

None of these

Addition polymerization

3. Quartzite, a metamorphic stone is

Crystalline

All of these

Brittle

Hard

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

White lead

Zinc white

Titanium white

Red lead

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

Deodar

Sal

Mahogany

Mulberry

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

Teak

Sal

Shishum

Chir

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

Carbon steel

Stainless steel

Titanium steel

Invar

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

King closer

Queen closer

Squint brick

Closer

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

Cementation process

Crucible process

Open hearth process

Bessemer process

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

Strip

Plank

Slate

Board

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

Squint brick

Closer

King closer

Queen closer

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

5 kg/mm^2

15 kg/mm^2

9 kg/mm^2

13 kg/mm^2

13. 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

14. The silica is used for preparing

Lining for glass furnaces

Coke oven

All of these

Silica bricks

15. Formula for quick lime, is

CaCO₃

None to these

Ca(OH)₂

CO3CO2

16. Polymerization helps to improve the property of

All of these

Rigidity

Elasticity

Strength

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

Kneading

Pugging

Drying

Moulding

18. The moisture content in a well seasoned timber is

15 % to 20 %

4 % to 6 %

100 %

10 % to 12 %

19. Priming consists of

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

None to these

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

20. Mastic asphalt is

Fire proof

All of these

Water proof

Elastic

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21. Manganese steels

Possess low coefficient of expansion

All of these

Possess high electrical resistance

Are non-magnetic

22. Expanded metal is

All of these

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

Used for reinforced concrete in road pavements

Manufactured from steel sheets

23. The stones obtained by blasting are used as

Road metal

Ballast in railways

Aggregates for concrete

All of these

24. The plastics made from cellulose resin

Are tough and strong

All of these

Are as clear as glass

Possess excellent electrical properties

25. Duco is one of the patent forms of

Bituminous paints

Emulsion paints

Plastic paints

Cellulose paints

26. Wrought iron is used for

None of these

Small sized water pipes

Columns and struts

Structural works in beams

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

Bottom face

Shorter side

Top face

Longer side

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

Carbamide

Phenol formaldehyde

All of these

Melamine-formaldehyde

29. Pick up the plutonic rock from the following:

All of these

Dolerite

Basalt

Granite

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

15

17

10

12

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31. Cement is said to be of good quality if

None of these

Its color is not greenish grey

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

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

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

1

3

2

4

33. Plaster of Paris is obtained by calcining

Lime stone

Gypsum

Bauxite

None of these

34. The cement becomes unsound by the presence of excess

Sulphur

Lime

All of these

Magnesia

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

500

400

425

450

36. The normal consistency of ordinary Portland cement is about

20 %

40 %

30 %

10 %

37. Lacquer is

None of these

Spirit varnish

Oil paint

Distemper

38. Rapid hardening cement contains

Tetra-calcium alumino-ferrite

Di-calcium silicate

Tri-calcium silicate

Tri-calcium aluminate

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

Bitumen-emulsion

Cut-back bitumen

Plastic bitumen

Blown bitumen

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

Pure clay, sandy clay, calcareous clay

Calcareous clay, pure clay, sandy clay

Sandy clay, calcareous clay, pure clay

None of these

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41. Quartzite is a

Calcareous rock

Argillaceous rock

Siliceous rock

Metamorphic rock

Building Materials MCQs Set-10

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