Building Materials MCQs Set-10

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

Titanium steel

Stainless steel

Carbon steel

Invar

2. The normal consistency of ordinary Portland cement is about

10 %

40 %

20 %

30 %

3. Mastic asphalt is

Water proof

Fire proof

Elastic

All of these

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

Moulding

Pugging

Kneading

Drying

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

Cementation process

Open hearth process

Bessemer process

Crucible process

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

15 kg/mm^2

5 kg/mm^2

13 kg/mm^2

9 kg/mm^2

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

Bitumen-emulsion

Blown bitumen

Cut-back bitumen

Plastic bitumen

8. Manganese steels

Possess high electrical resistance

Are non-magnetic

Possess low coefficient of expansion

All of these

9. The stones obtained by blasting are used as

All of these

Road metal

Ballast in railways

Aggregates for concrete

10. The moisture content in a well seasoned timber is

4 % to 6 %

15 % to 20 %

10 % to 12 %

100 %

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

Condensation polymerization

None of these

Addition polymerization

Co-polymerization

12. Quartzite is a

Metamorphic rock

Argillaceous rock

Calcareous rock

Siliceous rock

13. The plastics made from cellulose resin

Are tough and strong

Are as clear as glass

All of these

Possess excellent electrical properties

14. Plaster of Paris is obtained by calcining

None of these

Gypsum

Lime stone

Bauxite

15. Cement is said to be of good quality if

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

Its color is not greenish grey

None of these

16. The percentage of water for normal consistency, is

10% to 25%

5% to 15%

15% to 25%

20% to 30%

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

Sal

Mahogany

Deodar

Mulberry

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

King closer

Squint brick

Queen closer

Closer

19. Duco is one of the patent forms of

Emulsion paints

Bituminous paints

Plastic paints

Cellulose paints

20. Rapid hardening cement contains

Di-calcium silicate

Tetra-calcium alumino-ferrite

Tri-calcium aluminate

Tri-calcium silicate

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

Zinc white

Titanium white

White lead

Red lead

22. Quartzite, a metamorphic stone is

Brittle

Hard

Crystalline

All of these

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

Strip

Board

Plank

Slate

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

450

500

400

425

25. Pick up the plutonic rock from the following:

Basalt

All of these

Dolerite

Granite

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

Pure clay, sandy clay, calcareous clay

Calcareous clay, pure clay, sandy clay

None of these

Sandy clay, calcareous clay, pure clay

27. 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

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

None to these

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

15

12

10

17

29. The silica is used for preparing

Lining for glass furnaces

Silica bricks

All of these

Coke oven

30. Wrought iron is used for

Small sized water pipes

Structural works in beams

Columns and struts

None of these

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31. Polymerization helps to improve the property of

All of these

Strength

Rigidity

Elasticity

32. The cement becomes unsound by the presence of excess

All of these

Magnesia

Sulphur

Lime

33. Formula for quick lime, is

Ca(OH)₂

CaCO₃

None to these

CO3CO2

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

Carbamide

All of these

Phenol formaldehyde

Melamine-formaldehyde

35. Lacquer is

None of these

Distemper

Spirit varnish

Oil paint

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

Top face

Shorter side

Longer side

Bottom face

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

Chir

Teak

Sal

Shishum

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

2

1

3

4

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

Queen closer

Closer

King closer

Squint brick

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

0.60

0.40

0.50

None of these

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41. Expanded metal is

All of these

Manufactured from steel sheets

Used for reinforced concrete in road pavements

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

Building Materials MCQs Set-10

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