Building Materials MCQs Set-10

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1. Wrought iron is used for

Structural works in beams

Small sized water pipes

None of these

Columns and struts

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

Plastic bitumen

Bitumen-emulsion

Cut-back bitumen

Blown bitumen

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

None of these

Condensation polymerization

Co-polymerization

Addition polymerization

4. Quartzite, a metamorphic stone is

Brittle

All of these

Crystalline

Hard

5. The moisture content in a well seasoned timber is

10 % to 12 %

100 %

4 % to 6 %

15 % to 20 %

6. Mastic asphalt is

All of these

Fire proof

Water proof

Elastic

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

Zinc white

White lead

Red lead

Titanium white

8. The percentage of water for normal consistency, is

20% to 30%

15% to 25%

10% to 25%

5% to 15%

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

0.40

0.60

None of these

0.50

10. Polymerization helps to improve the property of

Strength

Elasticity

All of these

Rigidity

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

Invar

Titanium steel

Carbon steel

Stainless steel

12. 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

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

Longer side

Bottom face

Top face

Shorter side

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

Shishum

Chir

Sal

Teak

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

Squint brick

King closer

Queen closer

Closer

16. The silica is used for preparing

Lining for glass furnaces

Silica bricks

Coke oven

All of these

17. Pick up the plutonic rock from the following:

Basalt

Granite

All of these

Dolerite

18. Manganese steels

Possess high electrical resistance

Are non-magnetic

All of these

Possess low coefficient of expansion

19. Duco is one of the patent forms of

Emulsion paints

Plastic paints

Cellulose paints

Bituminous paints

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

13 kg/mm^2

5 kg/mm^2

15 kg/mm^2

9 kg/mm^2

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21. Quartzite is a

Metamorphic rock

Argillaceous rock

Calcareous rock

Siliceous rock

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

4

3

1

2

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

Phenol formaldehyde

Melamine-formaldehyde

Carbamide

All of these

24. Cement is said to be of good quality if

Its color is not greenish grey

None of these

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

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

25. Expanded metal is

All of these

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

Manufactured from steel sheets

Used for reinforced concrete in road pavements

26. 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

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

10

17

12

15

28. Formula for quick lime, is

CaCO₃

None to these

CO3CO2

Ca(OH)₂

29. Rapid hardening cement contains

Tri-calcium aluminate

Tetra-calcium alumino-ferrite

Tri-calcium silicate

Di-calcium silicate

30. The plastics made from cellulose resin

Are tough and strong

All of these

Are as clear as glass

Possess excellent electrical properties

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

Board

Plank

Slate

Strip

32. The stones obtained by blasting are used as

Road metal

All of these

Ballast in railways

Aggregates for concrete

33. The normal consistency of ordinary Portland cement is about

20 %

30 %

10 %

40 %

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

450

500

425

400

35. The cement becomes unsound by the presence of excess

All of these

Magnesia

Lime

Sulphur

36. 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

37. Lacquer is

Oil paint

None of these

Distemper

Spirit varnish

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

Pugging

Moulding

Drying

Kneading

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

Mulberry

Sal

Mahogany

Deodar

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

Closer

Queen closer

Squint brick

King closer

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41. Plaster of Paris is obtained by calcining

Bauxite

Gypsum

None of these

Lime stone

Building Materials MCQs Set-10

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