Building Materials MCQs Set-10

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

9 kg/mm^2

5 kg/mm^2

15 kg/mm^2

13 kg/mm^2

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

Moulding

Kneading

Drying

Pugging

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

Crucible process

Open hearth process

Cementation process

Bessemer process

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

None of these

Co-polymerization

Addition polymerization

Condensation polymerization

5. Pick up the plutonic rock from the following:

Granite

Dolerite

Basalt

All of these

6. Formula for quick lime, is

Ca(OH)₂

None to these

CaCO₃

CO3CO2

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

Sal

Teak

Shishum

Chir

8. Quartzite is a

Calcareous rock

Siliceous rock

Metamorphic rock

Argillaceous rock

9. The silica is used for preparing

Lining for glass furnaces

Coke oven

Silica bricks

All of these

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

King closer

Queen closer

Squint brick

Closer

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

Titanium white

Zinc white

White lead

Red lead

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

Slate

Plank

Strip

Board

13. The moisture content in a well seasoned timber is

100 %

15 % to 20 %

10 % to 12 %

4 % to 6 %

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

Invar

Stainless steel

Titanium steel

Carbon steel

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

Bitumen-emulsion

Plastic bitumen

Blown bitumen

Cut-back bitumen

16. Lacquer is

Oil paint

Spirit varnish

Distemper

None of these

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

Mulberry

Mahogany

Deodar

Sal

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

17

10

15

12

19. Rapid hardening cement contains

Di-calcium silicate

Tri-calcium aluminate

Tetra-calcium alumino-ferrite

Tri-calcium silicate

20. Mastic asphalt is

Elastic

Water proof

Fire proof

All of these

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21. Wrought iron is used for

None of these

Structural works in beams

Small sized water pipes

Columns and struts

22. The plastics made from cellulose resin

Are as clear as glass

Are tough and strong

All of these

Possess excellent electrical properties

23. Quartzite, a metamorphic stone is

All of these

Brittle

Crystalline

Hard

24. Plaster of Paris is obtained by calcining

Bauxite

None of these

Lime stone

Gypsum

25. Expanded metal is

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

Manufactured from steel sheets

Used for reinforced concrete in road pavements

All of these

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

Shorter side

Top face

Bottom face

Longer side

27. Manganese steels

All of these

Are non-magnetic

Possess low coefficient of expansion

Possess high electrical resistance

28. Duco is one of the patent forms of

Cellulose paints

Emulsion paints

Bituminous paints

Plastic paints

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

Phenol formaldehyde

All of these

Carbamide

Melamine-formaldehyde

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

Sandy clay, calcareous clay, pure clay

None of these

Calcareous clay, pure clay, sandy clay

Pure clay, sandy clay, calcareous clay

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

0.50

None of these

0.40

0.60

32. The percentage of water for normal consistency, is

5% to 15%

10% to 25%

15% to 25%

20% to 30%

33. Polymerization helps to improve the property of

Rigidity

Elasticity

All of these

Strength

34. Priming consists of

One part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil

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 one part of linseed oil

35. The normal consistency of ordinary Portland cement is about

10 %

30 %

40 %

20 %

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

450

400

500

425

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

King closer

Squint brick

Closer

Queen closer

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

4

3

1

2

39. Cement is said to be of good quality if

None of these

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

Its color is not greenish grey

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

40. The stones obtained by blasting are used as

All of these

Ballast in railways

Aggregates for concrete

Road metal

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41. The cement becomes unsound by the presence of excess

Magnesia

All of these

Sulphur

Lime

Building Materials MCQs Set-10

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