Building Materials MCQs Set-11

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1. The usual percentages of clay and metal in cermet are:

70%, 30%

80%, 20%

50%, 50%

60%, 40%

2. Acrylic is the name of

Cumarone-indene

Alkyd resin

Methyl methacrylate

Cellulose resin

3. The lime which contains high percentage of calcium oxide, is generally called

None of these

White lime

Rich lime

Fat lime

4. The cracks which extend from bark towards the sap wood in the cross section of a tree, are called

Radial shakes

Cup shakes

Star shakes

Heart shakes

5. The property by virtue of which lime sets under water, is known as

Hydraulicity

Calcining

Setting

Slacking

6.

Earthen ware

All of these

Stone ware

Refractory clay

7. The most important constituent of an oil paint, is

Thinner

Pigment

All of these

Vehicle

8. The steel used in R.C.C. work is

Wrought iron

Mild steel

High carbon steel

Stainless steel

9. Pick up the hypabyssal rock from the following:

All of these

Granite

Dolerite

Basalt

10. The commonly used base for iron and steel work, is

Red lead

Titanium white

Zinc white

White lead

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11. Wrought iron contains carbon upto

1.5 %

1.0 %

2.0 %

0.25 %

12. Second class bricks

Are under burnt

Are well burnt

Produce a metallic sound when struck

Are of dark brown color

13. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as

Low heat Portland cement

White cement

Rapid hardening cement

Quick setting cement

14. A well seasoned timber may contain moisture up to

8 to 10 %

6 to 8 %

10 to 12 %

4 to 6 %

15. The PVC doors and windows are preferred as they are

Rust proof

Water proof

Rot proof

All of these

16. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:

15, 75, 10

10, 75, 15

75, 10, 15

10, 15, 75

17. The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as

Crucible process

Open hearth process

Bessemer process

Cementation process

18. Lime stones are generally known as

Aqueous rocks

Stratified rocks

Sedimentary rocks

All of these

19. For high grade instruments the steel preferred to, is

Mild steel

Bessemer steel

Whitworth compressed steel

Cast steel

20. The variety of pig iron used for manufacture of wrought iron, is

Grey or foundry pig

White forge pig

Bessemer pig

Mottled pig

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21. Knots in timber are

Speckled strains

Splits radiating from the centre

Signs of branches cut off

Defects caused by crushing fibres

22. Upto a maximum of 72% of iron, is available in

Iron pyrites

Magnetite

Limonite

Siderite

23. Acrylic sheets

Possess the light transmission rate of 93%

Are generally unaffected by most household detergents

All the above

Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness

24. Pick up the polymineralic rock from the following:

Granite

Magnesite

Quartz sand

Pure gypsum

25. Plastic asphalt is

A mixture of cement and asphalt

Used as a water proofing layer over roof

A refinery product

A natural asphalt

26. The cast iron when heated to red heat with powdered red haematite in an oven for increasing its toughness, is converted to

Grey cast iron

White cast iron

Toughed cast iron

Mottled cast iron

27. The lime which contains mainly calcium oxide and slacks with water, is

Fat lime

Hydraulic lime

Quick lime

Poor lime

28. Porcelain is used as:

Sanitary wares

Storage vessels

Electric insulators

Reactor chambers

29. The steel used for rails under heavy traffic and on sharp curves, is

Manganese steel

Vanadium steel

Nickel steel

Chrome steel

30. Kaolin is chemically classified as

Calcareous rock

Siliceous rock

Argillaceous rock

Metamorphic rock

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31. Bitumen felt is used for

(C) Both (A) and (B)

(D) Neither (A) nor (B)

(B) Damp proofing

(A) Water proofing

32. The rock generally used for roofing, is

Slate

Basalt

Granite

Pumice

33. The melting point of silica is:

1630°C

1570°C

1730°C

1850°C

34. The standard size of masonry bricks, is

18 cm × 8 cm × 8 cm

19 cm × 9 cm × 9 cm

21 cm × 11 cm × 11 cm

20 cm × 10 cm × 10 cm

35. In a rock calcium carbonate predominates. State whether it is :

Calcareous rock

None of these

Siliceous rock

Argillaceous rock

36. Stones used for rubble masonry must be

Heavy

Light

Hard

Soft

37. The minimum compressive strength of 1st class bricks should be

100 kg/cm^2

75 kg/cm^2

90 kg/cm^2

120 kg/cm^2

38. Pick up the rock which is not a sedimentary rock from the following:

Sand stone

Gypsum

Dolerite

Gravel

39. The specific gravity of marble, is

2.60

2.50

2.66

2.72

40. The sequence of refractory materials according to increasing melting points is:

Dolomite, Magnesia, Bauxite, Chromites

None of these

Magnesia, Bauxite, Dolomite, Chromites

Bauxite, Chromites, Dolomite, Magnesia

Building Materials MCQs Set-11

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Building Materials MCQs Set-11

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