Building Materials MCQs Set-10

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

Calcareous clay, pure clay, sandy clay

None of these

Pure clay, sandy clay, calcareous clay

Sandy clay, calcareous clay, pure clay

2. Mastic asphalt is

Fire proof

All of these

Elastic

Water proof

3. Manganese steels

All of these

Are non-magnetic

Possess low coefficient of expansion

Possess high electrical resistance

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

Invar

Carbon steel

Titanium steel

Stainless steel

5. The plastics made from cellulose resin

All of these

Are as clear as glass

Possess excellent electrical properties

Are tough and strong

6. The silica is used for preparing

All of these

Lining for glass furnaces

Silica bricks

Coke oven

7. Duco is one of the patent forms of

Bituminous paints

Cellulose paints

Emulsion paints

Plastic paints

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

Drying

Moulding

Pugging

Kneading

9. The normal consistency of ordinary Portland cement is about

40 %

30 %

10 %

20 %

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

King closer

Closer

Queen closer

Squint brick

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11. 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

12. The cement becomes unsound by the presence of excess

All of these

Sulphur

Lime

Magnesia

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

Queen closer

King closer

Squint brick

Closer

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

Teak

Sal

Chir

Shishum

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

Titanium white

Zinc white

White lead

Red lead

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

None of these

Co-polymerization

Condensation polymerization

Addition polymerization

17. Plaster of Paris is obtained by calcining

Lime stone

Gypsum

Bauxite

None of these

18. Polymerization helps to improve the property of

Elasticity

All of these

Strength

Rigidity

19. Expanded metal is

Manufactured from steel sheets

Used for reinforced concrete in road pavements

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

All of these

20. Quartzite is a

Metamorphic rock

Calcareous rock

Argillaceous rock

Siliceous rock

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21. Lacquer is

Oil paint

Spirit varnish

None of these

Distemper

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

Board

Strip

Plank

Slate

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

3

4

2

1

24. The percentage of water for normal consistency, is

20% to 30%

10% to 25%

15% to 25%

5% to 15%

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

Longer side

Bottom face

Shorter side

Top face

26. Pick up the plutonic rock from the following:

Basalt

Dolerite

Granite

All of these

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

Bitumen-emulsion

Blown bitumen

Cut-back bitumen

Plastic bitumen

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

500

450

400

425

29. The stones obtained by blasting are used as

Aggregates for concrete

Road metal

All of these

Ballast in railways

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

None of these

0.40

0.50

0.60

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31. Priming consists of

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

None to these

32. The moisture content in a well seasoned timber is

4 % to 6 %

15 % to 20 %

100 %

10 % to 12 %

33. Rapid hardening cement contains

Tri-calcium silicate

Tetra-calcium alumino-ferrite

Tri-calcium aluminate

Di-calcium silicate

34. 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

35. Cement is said to be of good quality if

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

None of these

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

Its color is not greenish grey

36. Formula for quick lime, is

CO3CO2

CaCO₃

Ca(OH)₂

None to these

37. Quartzite, a metamorphic stone is

Brittle

Hard

All of these

Crystalline

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

Deodar

Mahogany

Sal

Mulberry

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

Carbamide

All of these

Phenol formaldehyde

Melamine-formaldehyde

40. Wrought iron is used for

Columns and struts

Small sized water pipes

Structural works in beams

None of these

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

12

15

10

17

Building Materials MCQs Set-10

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