Building Materials MCQs Set-9

Page 1 of 4

1. 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

Quarrying of stones

Dressing of stones

Blasting of stones

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

All of these

Its final setting time is about 10 hours

It possesses less compressive strength

Its initial setting time is about one hour

3. A heavy stone is suitable for

Arches

Rubble masonry

Roads

Retaining walls

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

20 %

10 %

25 %

15 %

5. Granite is not suitable for ordinary building purpose because

It is not a fireproof material

It is costly

It cannot be polished

It has less crushing strength

6. For melting one tonne of cast iron

All of these

20 kg limestone is required

One quintal coke is required

700 m^3 air is required

7. Plywood is made from

Bamboo fibre

Asbestos sheets

Common timber

Teak wood only

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

Of high degree of tenacity

Of good plasticity

All of these

Sufficiently pure

9. The slump recommended for mass concrete is about

125 mm to 150 mm

50 mm to 100 mm

100 mm to 125 mm

25 mm to 50 mm

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

Sulphur

Carbon

Phosphorus

Silicon

Page 2 of 4

11. Durability of building stone is affected by its

Texture

Chemical composition

All the above

Resistance to atmosphere

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

Mild steel

Stainless steel

Bessemer steel

Cast steel

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

(C) Both (A) and (B)

(B) Are affected by moisture

None of these

(A) Split easily

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

Spirit varnish

Oil varnish

Turpentine varnish

Water varnish

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

Mottled pig

Grey or foundry pig

Bessemer pig

White or forge pig

16. Excess of silica in brick earth results in

Enhancing the impermeability of bricks

Loss of cohesion

None of these

Cracking and warping of bricks

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

Vanadium

Manganese

Nickel

Chromium

18. Stainless steel contains

12% of chromium and 36% of nickel

18% of chromium and 8% nickel

8% of chromium and 18% of nickel

36% of chromium and 12% of nickel

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

Di-calcium silicate

Gypsum

Tri-calcium silicate

Tri-calcium aluminate

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

Slate

Quartzite

Limestone

Marble

Page 3 of 4

21. The commonly used lime in white washing, is

Hydraulic lime

White lime

Fat lime

Quick lime

22. Glazing is used to make earthenware

Porous

Hard

Impervious

Soft

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

Double Flemish bond

Zigzag bond

English bond

Single Flemish bond

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

All of these

Presence of sap

Absence of sunlight

Dampness

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

3.2 kg

1.5 kg

2.2 kg

None of these

26. Lacquer paints

Are less durable as compared to enamel paints

All of these

Are generally applied on structural steel

Consist of resin and nitro-cellulose

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

10.5 N/mm²

3.5 N/mm²

14.0 N/mm²

7.0 N/mm²

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

Tri-calcium silicate

Tetra-calcium alumino-ferrite

Di-calcium silicate

Tri-calcium aluminate

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

Tri-calcium silicate

Tri-calcium aluminate

All of these

Di-calcium silicate

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

All of these

Amosite asbestos

Actinolite asbestos

Anthophylite asbestos

Page 4 of 4

31. Seasoning of timber is done for

Increasing moisture content

None to these

Decreasing moisture content

Increasing strength of timber

32. Percentage of carbon content in mild steel is

Greater than 1.5

Less than 0.25

Between 0.25 and 0.7

Between 0.7 and 1.5

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

Headers

Brick bats

Stretchers

Queen closer

34. The hardest rock is

Diamond

Marble

Quartz

Talc

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

Soundness of cement

compressive strength of cement

Setting time of cement

Tensile strength of cement

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

Manganese

Carbon

Iron

Sulphur

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

20 to 30 %

5 to 10 %

70 to 80 %

50 to 60 %

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

Iron ore, carbon and lime stone

Iron ore, coal and sulphur

Iron ore, carbon and sulphur

Iron ore, coal and lime stone

39. Quick lime (or caustic lime)

All of these

Has great affinity to moisture

Is obtained by the calcination of pure lime stone

Is amorphous

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

Polyvinylchloride

Polypropylene

All of these

Polystyrene

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