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

Sandy clay, calcareous clay, pure clay

Pure clay, sandy clay, calcareous clay

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

Blown bitumen

Bitumen-emulsion

Plastic bitumen

Cut-back bitumen

3. 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

4. Duco is one of the patent forms of

Cellulose paints

Plastic paints

Bituminous paints

Emulsion paints

5. Quartzite is a

Siliceous rock

Argillaceous rock

Metamorphic rock

Calcareous rock

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

Invar

Carbon steel

Stainless steel

Titanium steel

7. Formula for quick lime, is

CaCO₃

Ca(OH)₂

None to these

CO3CO2

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

Plank

Board

Strip

Slate

9. 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

10. The stones obtained by blasting are used as

Aggregates for concrete

All of these

Road metal

Ballast in railways

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11. Mastic asphalt is

Fire proof

Elastic

Water proof

All of these

12. Quartzite, a metamorphic stone is

Crystalline

All of these

Brittle

Hard

13. The silica is used for preparing

Lining for glass furnaces

Silica bricks

Coke oven

All of these

14. The cement becomes unsound by the presence of excess

Magnesia

Sulphur

Lime

All of these

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

Mahogany

Mulberry

Deodar

Sal

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

13 kg/mm^2

15 kg/mm^2

9 kg/mm^2

5 kg/mm^2

17. Rapid hardening cement contains

Tri-calcium aluminate

Di-calcium silicate

Tetra-calcium alumino-ferrite

Tri-calcium silicate

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

3

4

1

2

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

Crucible process

Cementation process

Bessemer process

Open hearth process

20. Expanded metal is

Used for reinforced concrete in road pavements

Manufactured from steel sheets

All of these

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

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

Sal

Teak

Chir

Shishum

22. The plastics made from cellulose resin

Are tough and strong

Are as clear as glass

All of these

Possess excellent electrical properties

23. The moisture content in a well seasoned timber is

10 % to 12 %

15 % to 20 %

4 % to 6 %

100 %

24. The normal consistency of ordinary Portland cement is about

30 %

10 %

20 %

40 %

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

Shorter side

Top face

Longer side

Bottom face

26. Plaster of Paris is obtained by calcining

Lime stone

Gypsum

None of these

Bauxite

27. Lacquer is

Oil paint

None of these

Distemper

Spirit varnish

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

Phenol formaldehyde

Melamine-formaldehyde

All of these

Carbamide

29. Polymerization helps to improve the property of

All of these

Rigidity

Elasticity

Strength

30. Pick up the plutonic rock from the following:

Granite

Dolerite

Basalt

All of these

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

Pugging

Kneading

Moulding

Drying

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

500

425

400

450

33. 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 one part of linseed oil

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

None to these

34. Wrought iron is used for

Columns and struts

Small sized water pipes

None of these

Structural works in beams

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

17

12

15

10

36. The percentage of water for normal consistency, is

20% to 30%

5% to 15%

15% to 25%

10% to 25%

37. Cement is said to be of good quality if

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

Its color is not greenish grey

None of these

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

38. Manganese steels

All of these

Possess low coefficient of expansion

Are non-magnetic

Possess high electrical resistance

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

Addition polymerization

Condensation polymerization

None of these

Co-polymerization

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

0.60

None of these

0.50

0.40

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

Zinc white

Red lead

Titanium white

White lead

Building Materials MCQs Set-10

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