Building Materials MCQs Set-11

Page 1 of 4

1. The rock generally used for roofing, is

Pumice

Granite

Basalt

Slate

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

Gravel

Sand stone

Gypsum

Dolerite

3. 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

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

Cup shakes

Radial shakes

Heart shakes

Star shakes

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

Red lead

Zinc white

Titanium white

White lead

6. Second class bricks

Are under burnt

Are well burnt

Produce a metallic sound when struck

Are of dark brown color

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

White lime

Rich lime

None of these

Fat lime

8.

Earthen ware

All of these

Refractory clay

Stone ware

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

Toughed cast iron

White cast iron

Mottled cast iron

Grey cast iron

10. The standard size of masonry bricks, is

19 cm × 9 cm × 9 cm

21 cm × 11 cm × 11 cm

20 cm × 10 cm × 10 cm

18 cm × 8 cm × 8 cm

Page 2 of 4

11. Lime stones are generally known as

Sedimentary rocks

All of these

Stratified rocks

Aqueous rocks

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

Siliceous rock

None of these

Argillaceous rock

Calcareous rock

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

Bessemer pig

White forge pig

Mottled pig

Grey or foundry pig

14. Stones used for rubble masonry must be

Soft

Heavy

Hard

Light

15. Wrought iron contains carbon upto

2.0 %

0.25 %

1.0 %

1.5 %

16. The melting point of silica is:

1730°C

1570°C

1630°C

1850°C

17. The specific gravity of marble, is

2.60

2.72

2.50

2.66

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

All of these

Rust proof

Rot proof

Water proof

19. Acrylic is the name of

Alkyd resin

Methyl methacrylate

Cumarone-indene

Cellulose resin

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

Limonite

Magnetite

Iron pyrites

Siderite

Page 3 of 4

21. Knots in timber are

Signs of branches cut off

Defects caused by crushing fibres

Speckled strains

Splits radiating from the centre

22. Porcelain is used as:

Electric insulators

Sanitary wares

Reactor chambers

Storage vessels

23. Bitumen felt is used for

(A) Water proofing

(C) Both (A) and (B)

(D) Neither (A) nor (B)

(B) Damp proofing

24. Kaolin is chemically classified as

Calcareous rock

Argillaceous rock

Siliceous rock

Metamorphic rock

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

15, 75, 10

75, 10, 15

10, 15, 75

10, 75, 15

26. Plastic asphalt is

A refinery product

A natural asphalt

A mixture of cement and asphalt

Used as a water proofing layer over roof

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

Vehicle

Thinner

All of these

Pigment

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

90 kg/cm^2

75 kg/cm^2

100 kg/cm^2

120 kg/cm^2

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

Bauxite, Chromites, Dolomite, Magnesia

Dolomite, Magnesia, Bauxite, Chromites

Magnesia, Bauxite, Dolomite, Chromites

None of these

30. 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

Page 4 of 4

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

70%, 30%

50%, 50%

60%, 40%

80%, 20%

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

Mild steel

Bessemer steel

Cast steel

Whitworth compressed steel

33. Pick up the hypabyssal rock from the following:

All of these

Dolerite

Granite

Basalt

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

Hydraulic lime

Poor lime

Fat lime

Quick lime

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

Manganese steel

Vanadium steel

Nickel steel

Chrome steel

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

White cement

Quick setting cement

Rapid hardening cement

Low heat Portland cement

37. Pick up the polymineralic rock from the following:

Quartz sand

Granite

Magnesite

Pure gypsum

38. A well seasoned timber may contain moisture up to

8 to 10 %

10 to 12 %

4 to 6 %

6 to 8 %

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

Slacking

Calcining

Hydraulicity

Setting

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

Wrought iron

High carbon steel

Mild steel

Stainless steel

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