Building Materials MCQs Set-8

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

None of the above

Both wood work and iron work

Wood work

Iron work

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

Plank

Log

Baulk

Batten

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

15 %

22 %

25 %

20 %

4. Calcination of iron ores is done

All of these

By roasting in heaps

To remove carbonic acid

To remove moisture

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

White lead

Zinc white

Red lead

Ferrous oxide

6. 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 %

10 %

15 %

None of these

7. Plastics are compounds of carbon with element

Nitrogen

Oxygen

All of these

Hydrogen

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

The hardness of the stone

The toughness of the stone

The compressive strength of the stone

The presence of soluble matter of stone

9. Slate is formed by metamorphic action on

Lime stone

Shale

Sand stone

Granite

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

120 kg/cm2

90 kg/cm2

100 kg/cm2

75 kg/cm2

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11. Bulking of sand is caused due to

Surface moisture

Air voids

Viscosity

Clay contents

12. Pug mill is used for

Drying of bricks

Burning of bricks

Moulding of clay

Preparation of clay

13. 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

14. 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

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

Half brick thick

One and a half bricks thick

Two bricks thick

One brick thick

16. Glazing of clay products, is done

To protect them from atmospheric effect

All of these

To improve their appearance

To protect them from corrosive action

17. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Both (i) and (ii)

Only (i)

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

Both (i) and (iii)

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

Ordinary Portland cement

Low heat cement

Rapid hardening cement

Sulphate resisting cement

19. Generally wooden moulds are made from

Deodar wood

Shishum wood

Ply wood

Teak wood

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

Scutch

Trowel

Square

Bolster

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21. The nominal size of the modular brick is

190 mm × 90 mm × 80 mm

190 mm × 190 mm × 90 mm

200 mm × 200 mm × 100 mm

200 mm × 100 mm × 100 mm

22. Cast steel is manufactured by

Crucible process

Open hearth process

Bessemer process

Cementation process

23. Addition of pozzolana to ordinary Portland cement increases

Shrinkage

Heat of hydration

Permeability

Bleeding

24. Age of a tree may be ascertained by

Number of annual rings

Radius of its stem

Circumference of its stem

Number of branches

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

Clay

Water

Calcium oxide

Silica

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

2.2

1.5

1.7

2.7

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

20 m

10 m

30 m

40 m

28. The foliated structure is very common in

Metamorphic rocks

None of these

Sedimentary rocks

Igneous rocks

29. Sea sand used in structures causes

Disintegration

All of these

Dampness

Efflorescence

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

Under-burnt bricks

Over-burnt bricks

First class bricks

Refractory bricks

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

16 MPa

11.5 MPa

7 MPa

21 MPa

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

Argillaceous rocks

Siliceous rocks

Sedimentary rocks

Calcareous rocks

33. Which of the following is a mineral?

Syenite

Granite

Quartz

Basalt

34. Pick up the synthetic resin from the following:

All of these

Resorcinol resin

Phenolic resin

Urea resin

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

2000 kg

1500 kg

1800 kg

1200 kg

36. Cross cut saw is used for

Cutting soft stones

Dressing stones

Cutting large blocks of stones

Cutting hard stones

37. The commonly used thinner in oil paints, is

(D) None the these

(A) Naphtha

(C) Both (a) and (b)

(B) Turpentine

38. 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)

(ii) and (iii)

(i) and (ii)

(iii) and (iv)

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

15 %

35 %

5 %

25 %

40. Bitumen is generally obtained from

Organic material

Coal

Synthetic material

Petroleum product

Building Materials MCQs Set-8

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