Building Materials MCQs Set-10

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1. The percentage of water for normal consistency, is

10% to 25%

20% to 30%

15% to 25%

5% to 15%

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

None of these

Pure clay, sandy clay, calcareous clay

Calcareous clay, pure clay, sandy clay

Sandy clay, calcareous clay, pure clay

3. Rapid hardening cement contains

Tri-calcium silicate

Di-calcium silicate

Tetra-calcium alumino-ferrite

Tri-calcium aluminate

4. Quartzite, a metamorphic stone is

Hard

Crystalline

All of these

Brittle

5. Formula for quick lime, is

None to these

Ca(OH)₂

CaCO₃

CO3CO2

6. Quartzite is a

Argillaceous rock

Metamorphic rock

Siliceous rock

Calcareous rock

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

Bitumen-emulsion

Blown bitumen

Cut-back bitumen

Plastic bitumen

8. Mastic asphalt is

Fire proof

Elastic

Water proof

All of these

9. The silica is used for preparing

Coke oven

Silica bricks

All of these

Lining for glass furnaces

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

Chir

Teak

Sal

Shishum

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

Strip

Slate

Plank

Board

12. 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

13. Cement is said to be of good quality if

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

None of these

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

Its color is not greenish grey

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

Carbon steel

Stainless steel

Invar

Titanium steel

15. Pick up the plutonic rock from the following:

Dolerite

All of these

Basalt

Granite

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

Melamine-formaldehyde

All of these

Phenol formaldehyde

Carbamide

17. Lacquer is

None of these

Oil paint

Spirit varnish

Distemper

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

1

2

4

3

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

Squint brick

Queen closer

King closer

Closer

20. The cement becomes unsound by the presence of excess

All of these

Lime

Magnesia

Sulphur

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21. Manganese steels

Possess low coefficient of expansion

Are non-magnetic

Possess high electrical resistance

All of these

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

Closer

King closer

Squint brick

Queen closer

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

Moulding

Drying

Kneading

Pugging

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

17

10

15

12

25. The moisture content in a well seasoned timber is

4 % to 6 %

10 % to 12 %

100 %

15 % to 20 %

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

Shorter side

Longer side

Bottom face

Top face

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

500

425

450

400

28. Polymerization helps to improve the property of

All of these

Strength

Rigidity

Elasticity

29. The normal consistency of ordinary Portland cement is about

20 %

40 %

10 %

30 %

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

None of these

Addition polymerization

Condensation polymerization

Co-polymerization

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31. Expanded metal is

Used for reinforced concrete in road pavements

Manufactured from steel sheets

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

All of these

32. Duco is one of the patent forms of

Cellulose paints

Emulsion paints

Bituminous paints

Plastic paints

33. 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

34. Plaster of Paris is obtained by calcining

Lime stone

Gypsum

Bauxite

None of these

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

5 kg/mm^2

13 kg/mm^2

9 kg/mm^2

15 kg/mm^2

36. The plastics made from cellulose resin

Are as clear as glass

All of these

Are tough and strong

Possess excellent electrical properties

37. The stones obtained by blasting are used as

Ballast in railways

All of these

Aggregates for concrete

Road metal

38. Wrought iron is used for

Columns and struts

Structural works in beams

None of these

Small sized water pipes

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

0.40

0.50

0.60

None of these

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

Red lead

Zinc white

Titanium white

White lead

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

Mulberry

Mahogany

Deodar

Sal

Building Materials MCQs Set-10

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