Building Materials MCQs Set-9

Page 1 of 4

1. Quick lime (or caustic lime)

All of these

Is amorphous

Has great affinity to moisture

Is obtained by the calcination of pure lime stone

2. In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they

None of these

(B) Are affected by moisture

(C) Both (A) and (B)

(A) Split easily

3. The preparation of surface of stone to obtain plain edges or to obtain stones of required size and shape is known as

Seasoning of stones

Dressing of stones

Quarrying of stones

Blasting of stones

4. In brick masonry the bond produced by laying alternate headers and stretchers in each course is known as

English bond

Single Flemish bond

Zigzag bond

Double Flemish bond

5. Percentage of carbon content in mild steel is

Between 0.7 and 1.5

Less than 0.25

Greater than 1.5

Between 0.25 and 0.7

6. For preparing porcelains, the clay should beFor preparing porcelains, the clay should be

All of these

Of good plasticity

Sufficiently pure

Of high degree of tenacity

7. Pick up the correct statement regarding low heat cement from the following:

Its final setting time is about 10 hours

Its initial setting time is about one hour

It possesses less compressive strength

All of these

8. Which of the following metamorphic rocks has the most weather resisting characteristics?

Slate

Quartzite

Limestone

Marble

9. For slaking of 10 kg of CaO, the theoretical amount of water is

1.5 kg

3.2 kg

2.2 kg

None of these

10. Stainless steel contains

8% of chromium and 18% of nickel

18% of chromium and 8% nickel

12% of chromium and 36% of nickel

36% of chromium and 12% of nickel

Page 2 of 4

11. Lacquer paints

Are less durable as compared to enamel paints

Are generally applied on structural steel

Consist of resin and nitro-cellulose

All of these

12. The hardest rock is

Marble

Talc

Diamond

Quartz

13. The slump recommended for mass concrete is about

25 mm to 50 mm

125 mm to 150 mm

100 mm to 125 mm

50 mm to 100 mm

14. Three basic raw materials which are needed in large quantities for production of steel are

Iron ore, coal and lime stone

Iron ore, coal and sulphur

Iron ore, carbon and lime stone

Iron ore, carbon and sulphur

15. Which of the following should be used for hearting of thicker walls?

Queen closer

Headers

Brick bats

Stretchers

16. To retard the initial setting time of cement, the compound responsible, is

Di-calcium silicate

Tri-calcium aluminate

Tri-calcium silicate

Gypsum

17. Seasoning of timber is done for

Decreasing moisture content

Increasing strength of timber

Increasing moisture content

None to these

18. A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than

15 %

20 %

25 %

10 %

19. Le-Chatelier's device is used for determining the

Soundness of cement

compressive strength of cement

Setting time of cement

Tensile strength of cement

20. Excess of silica in brick earth results in

Enhancing the impermeability of bricks

None of these

Cracking and warping of bricks

Loss of cohesion

Page 3 of 4

21. Pig iron made from haematite ores free from sulphur, phosphorus and copper, is known as

Bessemer pig

Grey or foundry pig

White or forge pig

Mottled pig

22. Glazing is used to make earthenware

Hard

Impervious

Soft

Porous

23. The method of addition polymerization is used for obtaining:

Polyvinylchloride

Polypropylene

Polystyrene

All of these

24. Which of the following gradients exerts maximum influence on properties of steel?

Manganese

Iron

Sulphur

Carbon

25. The commonly used lime in white washing, is

Hydraulic lime

White lime

Fat lime

Quick lime

26. Crushing strength of a first class brick should not be less than

14.0 N/mm²

10.5 N/mm²

3.5 N/mm²

7.0 N/mm²

27. Red short iron cracks when bent due to the presence of

Sulphur

Carbon

Silicon

Phosphorus

28. To give a brilliant finish, the type of varnish used, is

Spirit varnish

Water varnish

Turpentine varnish

Oil varnish

29. The yield strength and tensile strength of low carbon steel may be improved by the addition of

Vanadium

Manganese

Nickel

Chromium

30. Which one of the following is acid resistant asbestos?

Actinolite asbestos

Anthophylite asbestos

All of these

Amosite asbestos

Page 4 of 4

31. In the cement the compound quickest to react with water, is

Tri-calcium silicate

Tetra-calcium alumino-ferrite

Di-calcium silicate

Tri-calcium aluminate

32. The steel used for the manufacture of rails, is

Mild steel

Stainless steel

Bessemer steel

Cast steel

33. A heavy stone is suitable for

Roads

Arches

Rubble masonry

Retaining walls

34. The main constituent of cement which is responsible for initial setting of cement is

Tri-calcium aluminate

Di-calcium silicate

All of these

Tri-calcium silicate

35. Pick up the most favorable condition for the rapid growth of fungus for dry rot from the following:

Absence of sunlight

Dampness

Presence of sap

All of these

36. Durability of building stone is affected by its

Texture

Resistance to atmosphere

All the above

Chemical composition

37. Granite is not suitable for ordinary building purpose because

It cannot be polished

It is not a fireproof material

It has less crushing strength

It is costly

38. For melting one tonne of cast iron

700 m^3 air is required

One quintal coke is required

20 kg limestone is required

All of these

39. The percentage of alumina in a good brick earth lies between

70 to 80 %

20 to 30 %

50 to 60 %

5 to 10 %

40. Plywood is made from

Asbestos sheets

Common timber

Teak wood only

Bamboo fibre

Building Materials MCQs Set-9

Related

Leave a ReplyCancel reply

Secured Payments

Protection

Building Materials MCQs Set-9

Share this Now with Friends:

Related

Leave a ReplyCancel reply

Secured Payments

Protection