Building Materials MCQs Set-11

Page 1 of 4

1. Second class bricks

Are well burnt

Produce a metallic sound when struck

Are of dark brown color

Are under burnt

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

All of these

Vehicle

Thinner

Pigment

3. The rock generally used for roofing, is

Basalt

Granite

Slate

Pumice

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

75 kg/cm^2

100 kg/cm^2

120 kg/cm^2

90 kg/cm^2

5. The melting point of silica is:

1630°C

1730°C

1570°C

1850°C

6. Lime stones are generally known as

Aqueous rocks

Stratified rocks

All of these

Sedimentary rocks

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

Slacking

Calcining

Setting

Hydraulicity

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

Iron pyrites

Limonite

Siderite

Magnetite

9. Pick up the polymineralic rock from the following:

Granite

Pure gypsum

Quartz sand

Magnesite

10. Acrylic is the name of

Cumarone-indene

Methyl methacrylate

Cellulose resin

Alkyd resin

Page 2 of 4

11. Stones used for rubble masonry must be

Light

Soft

Heavy

Hard

12. Acrylic sheets

Are generally unaffected by most household detergents

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

Possess the light transmission rate of 93%

All the above

13. Kaolin is chemically classified as

Metamorphic rock

Siliceous rock

Calcareous rock

Argillaceous rock

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

Calcareous rock

Argillaceous rock

None of these

Siliceous rock

15. 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

16. Pick up the hypabyssal rock from the following:

All of these

Basalt

Dolerite

Granite

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

White lime

Fat lime

None of these

Rich lime

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

Vanadium steel

Manganese steel

Nickel steel

Chrome steel

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

Gypsum

Gravel

Dolerite

Sand stone

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

Magnesia, Bauxite, Dolomite, Chromites

Dolomite, Magnesia, Bauxite, Chromites

None of these

Bauxite, Chromites, Dolomite, Magnesia

Page 3 of 4

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

Low heat Portland cement

Quick setting cement

Rapid hardening cement

White cement

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

Titanium white

Zinc white

Red lead

White lead

23. Plastic asphalt is

A natural asphalt

A mixture of cement and asphalt

A refinery product

Used as a water proofing layer over roof

24. A well seasoned timber may contain moisture up to

8 to 10 %

10 to 12 %

4 to 6 %

6 to 8 %

25.

Earthen ware

Refractory clay

Stone ware

All of these

26. Porcelain is used as:

Electric insulators

Storage vessels

Sanitary wares

Reactor chambers

27. 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

Toughed cast iron

Grey cast iron

Mottled cast iron

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

Mild steel

High carbon steel

Wrought iron

Stainless steel

29. Wrought iron contains carbon upto

0.25 %

1.5 %

1.0 %

2.0 %

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

Poor lime

Hydraulic lime

Quick lime

Fat lime

Page 4 of 4

31. 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

Cementation process

Bessemer process

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

Water proof

Rust proof

Rot proof

All of these

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

Cup shakes

Heart shakes

Radial shakes

Star shakes

34. The specific gravity of marble, is

2.66

2.50

2.72

2.60

35. Knots in timber are

Speckled strains

Signs of branches cut off

Splits radiating from the centre

Defects caused by crushing fibres

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

Bessemer steel

Cast steel

Whitworth compressed steel

Mild steel

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

Bessemer pig

Mottled pig

Grey or foundry pig

White forge pig

38. Bitumen felt is used for

(B) Damp proofing

(D) Neither (A) nor (B)

(A) Water proofing

(C) Both (A) and (B)

39. The standard size of masonry bricks, is

19 cm × 9 cm × 9 cm

20 cm × 10 cm × 10 cm

21 cm × 11 cm × 11 cm

18 cm × 8 cm × 8 cm

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

60%, 40%

70%, 30%

50%, 50%

80%, 20%

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