Building Materials MCQs Set-8

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1. Sea sand used in structures causes

All of these

Dampness

Disintegration

Efflorescence

2. The most important tool in brick laying for lifting and spreading mortar and for forming joints is

Scutch

Trowel

Square

Bolster

3. Pick up the correct statement from the following:

Catalysts are added to assist and accelerate the hardening of resin

Fibrous fillers increase thermal resistance

The fillers are inert materials and they impart strength and hardness

All of these

4. Addition of pozzolana to ordinary Portland cement increases

Permeability

Shrinkage

Bleeding

Heat of hydration

5. The main constituent which imparts hydraulicity to hydraulic lime is

Clay

Calcium oxide

Water

Silica

6. Age of a tree may be ascertained by

Number of branches

Number of annual rings

Circumference of its stem

Radius of its stem

7. Slate is formed by metamorphic action on

Shale

Sand stone

Granite

Lime stone

8. Study the following statements.

(i) Hydraulic lime is suitable for white washing,

(ii) Fat lime is suitable for whitewashing,

(iii) Hydraulic lime is suitable for making mortar,

(iv) Fat lime is suitable for making mortar.

The correct answer is

(i) and (ii)

(i) and (iv)

(ii) and (iii)

(iii) and (iv)

9. Bitumen is generally obtained from

Synthetic material

Petroleum product

Coal

Organic material

10. The pigment used in paints for corrosive resistance, is

Zinc white

White lead

Red lead

Ferrous oxide

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11. What is the answer to this question?The weight of 1 m³ of brick earth, is about

2000 kg

1800 kg

1200 kg

1500 kg

12. The practical limit of moisture content achieved in air drying of timber is

15 %

5 %

35 %

25 %

13. Cast steel is manufactured by

Crucible process

Open hearth process

Cementation process

Bessemer process

14. Minimum thickness of wall where single Flemish bond can be used is

Half brick thick

One and a half bricks thick

One brick thick

Two bricks thick

15. Plastics are compounds of carbon with element

All of these

Nitrogen

Oxygen

Hydrogen

16. Which of the following is a mineral?

Basalt

Syenite

Quartz

Granite

17. Generally wooden moulds are made from

Shishum wood

Deodar wood

Teak wood

Ply wood

18. Which of the following bricks are used for lining of furnaces?

Refractory bricks

First class bricks

Under-burnt bricks

Over-burnt bricks

19. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

All (i), (ii) and (iii)

Both (i) and (ii)

Both (i) and (iii)

Only (i)

20. The foliated structure is very common in

Igneous rocks

Metamorphic rocks

Sedimentary rocks

None of these

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21. Based on the following rocks and minerals, select the correct statement, quartz, shale, basalt, granite, marble, gypsum, mica

Basalt and marble are the only metamorphic rocks

Quartz and mica are minerals

Granite is the only igneous rock

There is no sedimentary rock

22. The trunk of tree left after cutting all the branches is known as

Log

Batten

Baulk

Plank

23. The commonly used thinner in oil paints, is

(C) Both (a) and (b)

(D) None the these

(B) Turpentine

(A) Naphtha

24. Bulking of sand is caused due to

Surface moisture

Air voids

Viscosity

Clay contents

25. A first class brick when immersed in cold water for 24 hours should not absorb water more than

20 %

22 %

15 %

25 %

26. Smith's test of stones is performed to find out

The hardness of the stone

The presence of soluble matter of stone

The toughness of the stone

The compressive strength of the stone

27. Pick up the synthetic resin from the following:

Phenolic resin

All of these

Urea resin

Resorcinol resin

28. The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick

10 %

20 %

None of these

15 %

29. According to IS specifications, the compressive strength of ordinary Portland cement after three days should not be less than

7 MPa

11.5 MPa

21 MPa

16 MPa

30. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

200 mm × 200 mm × 100 mm

190 mm × 190 mm × 90 mm

190 mm × 90 mm × 80 mm

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31. Pug mill is used for

Burning of bricks

Drying of bricks

Preparation of clay

Moulding of clay

32. For a good building stone, its specific gravity should the greater than

1.5

1.7

2.7

2.2

33. Expansion joints in masonry walls are provided if length exceeds

30 m

10 m

20 m

40 m

34. Paints with white lead base are suitable for painting of

Iron work

None of the above

Wood work

Both wood work and iron work

35. Which of the following cements is suitable for use in massive concrete structures such as large dams?

Low heat cement

Sulphate resisting cement

Ordinary Portland cement

Rapid hardening cement

36. Calcination of iron ores is done

To remove moisture

To remove carbonic acid

By roasting in heaps

All of these

37. Glazing of clay products, is done

All of these

To protect them from corrosive action

To protect them from atmospheric effect

To improve their appearance

38. The minimum compressive strength of 2nd class bricks should be

120 kg/cm2

100 kg/cm2

90 kg/cm2

75 kg/cm2

39. Cross cut saw is used for

Dressing stones

Cutting soft stones

Cutting hard stones

Cutting large blocks of stones

40. The rocks having alumina or clay as their major constituents are known as

Calcareous rocks

Sedimentary rocks

Siliceous rocks

Argillaceous rocks

Building Materials MCQs Set-8

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