Building Materials MCQs Set-8

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1. The foliated structure is very common in

Metamorphic rocks

None of these

Sedimentary rocks

Igneous rocks

2. The commonly used thinner in oil paints, is

(C) Both (a) and (b)

(A) Naphtha

(D) None the these

(B) Turpentine

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

Silica

Calcium oxide

Clay

Water

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

Ordinary Portland cement

Sulphate resisting cement

Rapid hardening cement

Low heat cement

5. Pick up the synthetic resin from the following:

All of these

Resorcinol resin

Urea resin

Phenolic resin

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

15 %

22 %

20 %

25 %

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

Trowel

Scutch

Bolster

Square

8. Cast steel is manufactured by

Open hearth process

Cementation process

Crucible process

Bessemer process

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

One brick thick

Half brick thick

One and a half bricks thick

Two bricks thick

10. Which of the following is a mineral?

Granite

Syenite

Basalt

Quartz

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11. Pug mill is used for

Moulding of clay

Drying of bricks

Burning of bricks

Preparation of clay

12. 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

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

Iron work

Wood work

Both wood work and iron work

None of the above

14. Cross cut saw is used for

Cutting large blocks of stones

Cutting hard stones

Cutting soft stones

Dressing stones

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

15 %

5 %

25 %

35 %

16. Glazing of clay products, is done

All of these

To protect them from atmospheric effect

To improve their appearance

To protect them from corrosive action

17. Generally wooden moulds are made from

Teak wood

Ply wood

Shishum wood

Deodar wood

18. Age of a tree may be ascertained by

Circumference of its stem

Radius of its stem

Number of annual rings

Number of branches

19. Slate is formed by metamorphic action on

Lime stone

Sand stone

Shale

Granite

20. Calcination of iron ores is done

To remove moisture

To remove carbonic acid

All of these

By roasting in heaps

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21. Bulking of sand is caused due to

Surface moisture

Viscosity

Air voids

Clay contents

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

Plank

Baulk

Log

Batten

23. Plastics are compounds of carbon with element

Hydrogen

Nitrogen

All of these

Oxygen

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

Under-burnt bricks

First class bricks

Over-burnt bricks

Refractory bricks

25. Sea sand used in structures causes

Dampness

Disintegration

Efflorescence

All of these

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

Zinc white

Red lead

White lead

Ferrous oxide

27. Pick up the correct statement from the following:

Fibrous fillers increase thermal resistance

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

28. Bitumen is generally obtained from

Petroleum product

Organic material

Synthetic material

Coal

29. 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

30. 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 %

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31. Addition of pozzolana to ordinary Portland cement increases

Permeability

Bleeding

Heat of hydration

Shrinkage

32. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

190 mm × 90 mm × 80 mm

190 mm × 190 mm × 90 mm

200 mm × 200 mm × 100 mm

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

75 kg/cm2

90 kg/cm2

100 kg/cm2

120 kg/cm2

34. 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)

(ii) and (iii)

(i) and (iv)

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

Argillaceous rocks

Siliceous rocks

Calcareous rocks

Sedimentary rocks

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

Granite is the only igneous rock

Quartz and mica are minerals

Basalt and marble are the only metamorphic rocks

There is no sedimentary rock

37. 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

38. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

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

Both (i) and (iii)

Both (i) and (ii)

Only (i)

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

2.2

1.7

1.5

2.7

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

40 m

10 m

20 m

30 m

Building Materials MCQs Set-8

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