Building Materials MCQs Set-8

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

None of the above

Iron work

Wood work

Both wood work and iron work

2. Cross cut saw is used for

Dressing stones

Cutting hard stones

Cutting large blocks of stones

Cutting soft stones

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

Sedimentary rocks

Siliceous rocks

Argillaceous rocks

Calcareous rocks

4. Addition of pozzolana to ordinary Portland cement increases

Permeability

Bleeding

Shrinkage

Heat of hydration

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

Refractory bricks

Under-burnt bricks

Over-burnt bricks

First class bricks

6. 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)

(iii) and (iv)

(i) and (iv)

(ii) and (iii)

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

The toughness of the stone

The presence of soluble matter of stone

The hardness of the stone

The compressive strength of the stone

8. The commonly used thinner in oil paints, is

(A) Naphtha

(B) Turpentine

(C) Both (a) and (b)

(D) None the these

9. The foliated structure is very common in

Igneous rocks

Metamorphic rocks

Sedimentary rocks

None of these

10. Slate is formed by metamorphic action on

Granite

Shale

Lime stone

Sand stone

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

Plank

Baulk

Log

Batten

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

30 m

10 m

20 m

40 m

13. Bulking of sand is caused due to

Viscosity

Clay contents

Air voids

Surface moisture

14. Cast steel is manufactured by

Cementation process

Open hearth process

Bessemer process

Crucible process

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

25 %

22 %

15 %

20 %

16. Pick up the synthetic resin from the following:

All of these

Phenolic resin

Resorcinol resin

Urea resin

17. Generally wooden moulds are made from

Teak wood

Shishum wood

Ply wood

Deodar wood

18. Calcination of iron ores is done

To remove moisture

By roasting in heaps

All of these

To remove carbonic acid

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

120 kg/cm2

90 kg/cm2

75 kg/cm2

100 kg/cm2

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

One brick thick

One and a half bricks thick

Two bricks thick

Half brick thick

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21. Plastics are compounds of carbon with element

Nitrogen

Oxygen

All of these

Hydrogen

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

Rapid hardening cement

Sulphate resisting cement

Low heat cement

Ordinary Portland cement

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

Water

Calcium oxide

Silica

Clay

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

5 %

35 %

15 %

25 %

25. 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

Granite is the only igneous rock

There is no sedimentary rock

Quartz and mica are minerals

26. Age of a tree may be ascertained by

Circumference of its stem

Number of annual rings

Radius of its stem

Number of branches

27. Pick up the correct statement from the following:

Catalysts are added to assist and accelerate the hardening of resin

All of these

The fillers are inert materials and they impart strength and hardness

Fibrous fillers increase thermal resistance

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

1500 kg

1800 kg

1200 kg

2000 kg

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

White lead

Ferrous oxide

Zinc white

Red lead

30. Sea sand used in structures causes

All of these

Dampness

Efflorescence

Disintegration

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31. Glazing of clay products, is done

All of these

To improve their appearance

To protect them from atmospheric effect

To protect them from corrosive action

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

2.7

2.2

1.7

1.5

33. Pug mill is used for

Drying of bricks

Preparation of clay

Moulding of clay

Burning of bricks

34. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

190 mm × 90 mm × 80 mm

200 mm × 200 mm × 100 mm

190 mm × 190 mm × 90 mm

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

Square

Trowel

Scutch

Bolster

36. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Only (i)

Both (i) and (iii)

Both (i) and (ii)

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

37. 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

15 %

10 %

None of these

20 %

38. Which of the following is a mineral?

Granite

Basalt

Syenite

Quartz

39. Bitumen is generally obtained from

Petroleum product

Organic material

Synthetic material

Coal

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

21 MPa

7 MPa

11.5 MPa

16 MPa

Building Materials MCQs Set-8

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