Building Materials MCQs Set-9

Page 1 of 4

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

Zigzag bond

English bond

Single Flemish bond

Double Flemish bond

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

Carbon

Iron

Manganese

Sulphur

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

50 to 60 %

70 to 80 %

5 to 10 %

20 to 30 %

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

Amosite asbestos

Anthophylite asbestos

All of these

Actinolite asbestos

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

All of these

Presence of sap

Dampness

Absence of sunlight

6. Quick lime (or caustic lime)

All of these

Has great affinity to moisture

Is obtained by the calcination of pure lime stone

Is amorphous

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

Polypropylene

All of these

Polystyrene

Polyvinylchloride

8. Lacquer paints

Are generally applied on structural steel

Consist of resin and nitro-cellulose

All of these

Are less durable as compared to enamel paints

9. Plywood is made from

Bamboo fibre

Asbestos sheets

Teak wood only

Common timber

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

Nickel

Chromium

Manganese

Vanadium

Page 2 of 4

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

Its final setting time is about 10 hours

All of these

Its initial setting time is about one hour

It possesses less compressive strength

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

(A) Split easily

(B) Are affected by moisture

(C) Both (A) and (B)

None of these

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

25 %

15 %

10 %

20 %

14. Stainless steel contains

36% of chromium and 12% of nickel

12% of chromium and 36% of nickel

18% of chromium and 8% nickel

8% of chromium and 18% of nickel

15. The hardest rock is

Talc

Diamond

Marble

Quartz

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

Stretchers

Headers

Queen closer

Brick bats

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

Grey or foundry pig

Mottled pig

Bessemer pig

White or forge pig

18. Granite is not suitable for ordinary building purpose because

It is costly

It cannot be polished

It is not a fireproof material

It has less crushing strength

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

Of high degree of tenacity

All of these

Of good plasticity

Sufficiently pure

20. 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

Page 3 of 4

21. The slump recommended for mass concrete is about

125 mm to 150 mm

100 mm to 125 mm

50 mm to 100 mm

25 mm to 50 mm

22. Durability of building stone is affected by its

All the above

Resistance to atmosphere

Texture

Chemical composition

23. Excess of silica in brick earth results in

Cracking and warping of bricks

Loss of cohesion

None of these

Enhancing the impermeability of bricks

24. A heavy stone is suitable for

Retaining walls

Rubble masonry

Roads

Arches

25. Seasoning of timber is done for

Increasing moisture content

Increasing strength of timber

Decreasing moisture content

None to these

26. For melting one tonne of cast iron

One quintal coke is required

20 kg limestone is required

All of these

700 m^3 air is required

27. Percentage of carbon content in mild steel is

Less than 0.25

Greater than 1.5

Between 0.25 and 0.7

Between 0.7 and 1.5

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

Oil varnish

Turpentine varnish

Water varnish

Spirit varnish

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

Setting time of cement

Soundness of cement

compressive strength of cement

Tensile strength of cement

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

Carbon

Phosphorus

Silicon

Sulphur

Page 4 of 4

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

14.0 N/mm²

3.5 N/mm²

7.0 N/mm²

10.5 N/mm²

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

Blasting of stones

Quarrying of stones

Dressing of stones

Seasoning of stones

33. The commonly used lime in white washing, is

Hydraulic lime

Quick lime

Fat lime

White lime

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

Gypsum

Tri-calcium aluminate

Tri-calcium silicate

Di-calcium silicate

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

Quartzite

Marble

Limestone

Slate

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

All of these

Tri-calcium aluminate

Tri-calcium silicate

Di-calcium silicate

37. Glazing is used to make earthenware

Soft

Hard

Porous

Impervious

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

Bessemer steel

Mild steel

Stainless steel

Cast steel

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

Di-calcium silicate

Tri-calcium silicate

Tri-calcium aluminate

Tetra-calcium alumino-ferrite

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

None of these

1.5 kg

3.2 kg

2.2 kg

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