Building Materials MCQs Set-8

Page 1 of 4

1. Bulking of sand is caused due to

Surface moisture

Viscosity

Clay contents

Air voids

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

Calcareous rocks

Argillaceous rocks

Siliceous rocks

Sedimentary rocks

3. Bitumen is generally obtained from

Synthetic material

Petroleum product

Coal

Organic material

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

35 %

15 %

5 %

25 %

5. Slate is formed by metamorphic action on

Shale

Granite

Lime stone

Sand stone

6. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Both (i) and (iii)

Both (i) and (ii)

Only (i)

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

7. Cast steel is manufactured by

Crucible process

Open hearth process

Cementation process

Bessemer process

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

Low heat cement

Sulphate resisting cement

Rapid hardening cement

Ordinary Portland cement

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

First class bricks

Under-burnt bricks

Over-burnt bricks

Refractory bricks

10. Sea sand used in structures causes

Efflorescence

All of these

Dampness

Disintegration

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11. The nominal size of the modular brick is

200 mm × 200 mm × 100 mm

190 mm × 90 mm × 80 mm

190 mm × 190 mm × 90 mm

200 mm × 100 mm × 100 mm

12. Glazing of clay products, is done

To protect them from atmospheric effect

To improve their appearance

All of these

To protect them from corrosive action

13. Plastics are compounds of carbon with element

Nitrogen

Hydrogen

All of these

Oxygen

14. The commonly used thinner in oil paints, is

(D) None the these

(C) Both (a) and (b)

(B) Turpentine

(A) Naphtha

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

The toughness of the stone

The compressive strength of the stone

The hardness of the stone

The presence of soluble matter of stone

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

Iron work

None of the above

Both wood work and iron work

Wood work

17. Addition of pozzolana to ordinary Portland cement increases

Shrinkage

Permeability

Heat of hydration

Bleeding

18. Generally wooden moulds are made from

Teak wood

Ply wood

Shishum wood

Deodar wood

19. The foliated structure is very common in

Metamorphic rocks

Igneous rocks

Sedimentary rocks

None of these

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

2000 kg

1200 kg

1800 kg

1500 kg

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21. Pick up the synthetic resin from the following:

All of these

Resorcinol resin

Urea resin

Phenolic resin

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

Scutch

Bolster

Trowel

Square

23. Calcination of iron ores is done

To remove carbonic acid

To remove moisture

All of these

By roasting in heaps

24. Cross cut saw is used for

Cutting soft stones

Cutting hard stones

Dressing stones

Cutting large blocks of stones

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

20 m

30 m

10 m

40 m

26. Which of the following is a mineral?

Quartz

Granite

Basalt

Syenite

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

21 MPa

16 MPa

7 MPa

11.5 MPa

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

Log

Baulk

Plank

Batten

29. Pick up the correct statement from the following:

Fibrous fillers increase thermal resistance

All of these

Catalysts are added to assist and accelerate the hardening of resin

The fillers are inert materials and they impart strength and hardness

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

There is no sedimentary rock

Granite is the only igneous rock

Basalt and marble are the only metamorphic rocks

Quartz and mica are minerals

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

Clay

Water

Silica

Calcium oxide

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

Ferrous oxide

Zinc white

White lead

Red lead

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

15 %

25 %

20 %

22 %

34. 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

20 %

None of these

10 %

15 %

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

1.7

1.5

2.7

2.2

36. Age of a tree may be ascertained by

Number of annual rings

Radius of its stem

Number of branches

Circumference of its stem

37. 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 (iv)

(i) and (ii)

(ii) and (iii)

(iii) and (iv)

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

90 kg/cm2

120 kg/cm2

75 kg/cm2

100 kg/cm2

39. 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

40. Pug mill is used for

Drying of bricks

Burning of bricks

Preparation of clay

Moulding of clay

Building Materials MCQs Set-8

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