Building Materials MCQs Set-10

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

Queen closer

King closer

Closer

Squint brick

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

Mahogany

Sal

Mulberry

Deodar

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

Cut-back bitumen

Blown bitumen

Plastic bitumen

Bitumen-emulsion

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

Shorter side

Longer side

Bottom face

Top face

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

Co-polymerization

Addition polymerization

Condensation polymerization

None of these

6. Expanded metal is

Manufactured from steel sheets

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

Used for reinforced concrete in road pavements

All of these

7. Wrought iron is used for

Small sized water pipes

Structural works in beams

None of these

Columns and struts

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

450

400

425

500

9. Quartzite, a metamorphic stone is

Hard

All of these

Crystalline

Brittle

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

Cementation process

Bessemer process

Open hearth process

Crucible process

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

Chir

Shishum

Sal

Teak

12. Manganese steels

All of these

Are non-magnetic

Possess low coefficient of expansion

Possess high electrical resistance

13. The moisture content in a well seasoned timber is

4 % to 6 %

10 % to 12 %

15 % to 20 %

100 %

14. The stones obtained by blasting are used as

Road metal

Ballast in railways

All of these

Aggregates for concrete

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

13 kg/mm^2

15 kg/mm^2

5 kg/mm^2

9 kg/mm^2

16. Polymerization helps to improve the property of

Strength

Rigidity

Elasticity

All of these

17. Quartzite is a

Calcareous rock

Siliceous rock

Metamorphic rock

Argillaceous rock

18. The normal consistency of ordinary Portland cement is about

30 %

40 %

20 %

10 %

19. Mastic asphalt is

All of these

Elastic

Fire proof

Water proof

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

Kneading

Moulding

Drying

Pugging

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21. Duco is one of the patent forms of

Cellulose paints

Emulsion paints

Plastic paints

Bituminous paints

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

Carbon steel

Stainless steel

Titanium steel

Invar

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

2

3

1

4

24. Priming consists of

None to these

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

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

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

10

12

15

17

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. The silica is used for preparing

All of these

Lining for glass furnaces

Silica bricks

Coke oven

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

Titanium white

Zinc white

White lead

Red lead

29. Rapid hardening cement contains

Tri-calcium silicate

Tri-calcium aluminate

Tetra-calcium alumino-ferrite

Di-calcium silicate

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

Carbamide

Melamine-formaldehyde

Phenol formaldehyde

All of these

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31. Pick up the plutonic rock from the following:

Granite

All of these

Dolerite

Basalt

32. The cement becomes unsound by the presence of excess

All of these

Magnesia

Sulphur

Lime

33. The percentage of water for normal consistency, is

20% to 30%

5% to 15%

15% to 25%

10% to 25%

34. Lacquer is

Spirit varnish

Distemper

Oil paint

None of these

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

Queen closer

King closer

Closer

Squint brick

36. The plastics made from cellulose resin

Are tough and strong

Possess excellent electrical properties

All of these

Are as clear as glass

37. Formula for quick lime, is

CO3CO2

CaCO₃

None to these

Ca(OH)₂

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

Slate

Strip

Board

Plank

39. 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

40. Cement is said to be of good quality if

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

None of these

Its color is not greenish grey

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41. Plaster of Paris is obtained by calcining

Bauxite

None of these

Lime stone

Gypsum

Building Materials MCQs Set-10

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