Building Materials MCQs Set-11

Page 1 of 4

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

120 kg/cm^2

90 kg/cm^2

100 kg/cm^2

75 kg/cm^2

2. The specific gravity of marble, is

2.50

2.72

2.66

2.60

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

Iron pyrites

Limonite

Magnetite

Siderite

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

None of these

Calcareous rock

Siliceous rock

Argillaceous rock

5. The melting point of silica is:

1730°C

1570°C

1630°C

1850°C

6. Acrylic is the name of

Cellulose resin

Cumarone-indene

Methyl methacrylate

Alkyd resin

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

Rich lime

None of these

White lime

Fat lime

8. Stones used for rubble masonry must be

Heavy

Light

Soft

Hard

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

White cast iron

Mottled cast iron

Grey cast iron

Toughed cast iron

10. A well seasoned timber may contain moisture up to

8 to 10 %

6 to 8 %

10 to 12 %

4 to 6 %

Page 2 of 4

11. Second class bricks

Are under burnt

Produce a metallic sound when struck

Are well burnt

Are of dark brown color

12. Kaolin is chemically classified as

Siliceous rock

Metamorphic rock

Argillaceous rock

Calcareous rock

13. 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

14. 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

Cementation process

Bessemer process

Open hearth process

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

White lead

Red lead

Zinc white

Titanium white

16. Bitumen felt is used for

(A) Water proofing

(B) Damp proofing

(C) Both (A) and (B)

(D) Neither (A) nor (B)

17.

Refractory clay

Stone ware

Earthen ware

All of these

18. Acrylic sheets

All the above

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

Possess the light transmission rate of 93%

Are generally unaffected by most household detergents

19. Plastic asphalt is

A natural asphalt

Used as a water proofing layer over roof

A refinery product

A mixture of cement and asphalt

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

Bessemer steel

Cast steel

Mild steel

Whitworth compressed steel

Page 3 of 4

21. Lime stones are generally known as

Sedimentary rocks

Stratified rocks

Aqueous rocks

All of these

22. The rock generally used for roofing, is

Basalt

Slate

Granite

Pumice

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

Vehicle

Thinner

All of these

Pigment

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

Wrought iron

Mild steel

Stainless steel

High carbon steel

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

60%, 40%

70%, 30%

50%, 50%

80%, 20%

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

Hydraulic lime

Fat lime

Quick lime

Poor lime

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

Heart shakes

Cup shakes

Radial shakes

Star shakes

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

Low heat Portland cement

Quick setting cement

White cement

Rapid hardening cement

29. Porcelain is used as:

Electric insulators

Reactor chambers

Storage vessels

Sanitary wares

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

Chrome steel

Nickel steel

Manganese steel

Vanadium steel

Page 4 of 4

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

Grey or foundry pig

Bessemer pig

Mottled pig

White forge pig

32. Knots in timber are

Defects caused by crushing fibres

Signs of branches cut off

Splits radiating from the centre

Speckled strains

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

Setting

Hydraulicity

Slacking

Calcining

34. Wrought iron contains carbon upto

2.0 %

0.25 %

1.0 %

1.5 %

35. Pick up the polymineralic rock from the following:

Granite

Pure gypsum

Magnesite

Quartz sand

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

Bauxite, Chromites, Dolomite, Magnesia

None of these

Magnesia, Bauxite, Dolomite, Chromites

Dolomite, Magnesia, Bauxite, Chromites

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

Gypsum

Dolerite

Sand stone

Gravel

38. Pick up the hypabyssal rock from the following:

All of these

Basalt

Granite

Dolerite

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

Rust proof

Water proof

Rot proof

All of these

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

75, 10, 15

15, 75, 10

10, 15, 75

10, 75, 15

Building Materials MCQs Set-11

Related

Leave a ReplyCancel reply

Secured Payments

Protection

Building Materials MCQs Set-11

Share this Now with Friends:

Related

Leave a ReplyCancel reply

Secured Payments

Protection