Building Materials MCQs Set-10

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

Shorter side

Longer side

Bottom face

Top face

2. The moisture content in a well seasoned timber is

15 % to 20 %

4 % to 6 %

100 %

10 % to 12 %

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

Cut-back bitumen

Bitumen-emulsion

Plastic bitumen

Blown bitumen

4. Polymerization helps to improve the property of

Rigidity

Strength

Elasticity

All of these

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

Slate

Strip

Plank

Board

6. The percentage of water for normal consistency, is

5% to 15%

20% to 30%

10% to 25%

15% to 25%

7. Wrought iron is used for

Small sized water pipes

Columns and struts

Structural works in beams

None of these

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

Co-polymerization

Addition polymerization

Condensation polymerization

None of these

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. Priming consists of

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

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

None to these

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11. Cement is said to be of good quality if

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

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

Its color is not greenish grey

None of these

12. Duco is one of the patent forms of

Bituminous paints

Plastic paints

Cellulose paints

Emulsion paints

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

Pure clay, sandy clay, calcareous clay

None of these

Calcareous clay, pure clay, sandy clay

Sandy clay, calcareous clay, pure clay

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

15

12

10

17

15. The silica is used for preparing

Lining for glass furnaces

Coke oven

All of these

Silica bricks

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

425

400

450

500

17. Mastic asphalt is

All of these

Elastic

Water proof

Fire proof

18. Lacquer is

None of these

Oil paint

Distemper

Spirit varnish

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

Bessemer process

Crucible process

Cementation process

Open hearth process

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

Melamine-formaldehyde

Carbamide

All of these

Phenol formaldehyde

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

Carbon steel

Titanium steel

Stainless steel

Invar

22. Rapid hardening cement contains

Di-calcium silicate

Tetra-calcium alumino-ferrite

Tri-calcium aluminate

Tri-calcium silicate

23. Pick up the plutonic rock from the following:

All of these

Granite

Basalt

Dolerite

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

Queen closer

King closer

Squint brick

Closer

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

Zinc white

White lead

Red lead

Titanium white

26. Quartzite, a metamorphic stone is

Crystalline

Hard

Brittle

All of these

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

13 kg/mm^2

5 kg/mm^2

9 kg/mm^2

15 kg/mm^2

28. Manganese steels

All of these

Are non-magnetic

Possess low coefficient of expansion

Possess high electrical resistance

29. The normal consistency of ordinary Portland cement is about

30 %

20 %

40 %

10 %

30. Quartzite is a

Calcareous rock

Siliceous rock

Metamorphic rock

Argillaceous rock

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31. The cement becomes unsound by the presence of excess

Lime

Magnesia

Sulphur

All of these

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

Deodar

Mahogany

Sal

Mulberry

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

1

2

4

3

34. Formula for quick lime, is

CaCO₃

CO3CO2

None to these

Ca(OH)₂

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

Kneading

Drying

Pugging

Moulding

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

Chir

Shishum

Sal

Teak

37. The plastics made from cellulose resin

All of these

Are tough and strong

Are as clear as glass

Possess excellent electrical properties

38. Plaster of Paris is obtained by calcining

Lime stone

None of these

Gypsum

Bauxite

39. 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

40. The stones obtained by blasting are used as

Ballast in railways

Aggregates for concrete

Road metal

All of these

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41. Expanded metal is

All of these

Used for reinforced concrete in road pavements

Manufactured from steel sheets

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

Building Materials MCQs Set-10

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