Building Materials MCQs Set-8

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

Red lead

Ferrous oxide

Zinc white

White lead

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

30 m

40 m

10 m

20 m

3. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

200 mm × 200 mm × 100 mm

190 mm × 90 mm × 80 mm

190 mm × 190 mm × 90 mm

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

The compressive strength of the stone

The presence of soluble matter of stone

The toughness of the stone

The hardness of the stone

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

Square

Trowel

Bolster

Scutch

6. 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

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

Calcareous rocks

Argillaceous rocks

Siliceous rocks

Sedimentary rocks

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

35 %

25 %

5 %

15 %

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

Calcium oxide

Water

Silica

Clay

10. Calcination of iron ores is done

All of these

By roasting in heaps

To remove carbonic acid

To remove moisture

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11. Plastics are compounds of carbon with element

Oxygen

All of these

Nitrogen

Hydrogen

12. Pug mill is used for

Moulding of clay

Burning of bricks

Preparation of clay

Drying of bricks

13. 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 %

15 %

10 %

None of these

14. Which of the following is a mineral?

Syenite

Quartz

Basalt

Granite

15. Glazing of clay products, is done

To protect them from corrosive action

To improve their appearance

To protect them from atmospheric effect

All of these

16. Pick up the synthetic resin from the following:

Urea resin

All of these

Resorcinol resin

Phenolic resin

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

90 kg/cm2

100 kg/cm2

75 kg/cm2

120 kg/cm2

18. Slate is formed by metamorphic action on

Sand stone

Shale

Lime stone

Granite

19. Addition of pozzolana to ordinary Portland cement increases

Shrinkage

Bleeding

Heat of hydration

Permeability

20. Generally wooden moulds are made from

Deodar wood

Shishum wood

Teak wood

Ply wood

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21. Age of a tree may be ascertained by

Circumference of its stem

Number of branches

Number of annual rings

Radius of its stem

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

1500 kg

1800 kg

2000 kg

1200 kg

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

There is no sedimentary rock

Quartz and mica are minerals

Granite is the only igneous rock

Basalt and marble are the only metamorphic rocks

24. 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)

25. The commonly used thinner in oil paints, is

(A) Naphtha

(B) Turpentine

(C) Both (a) and (b)

(D) None the these

26. Bulking of sand is caused due to

Viscosity

Air voids

Clay contents

Surface moisture

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

1.5

1.7

2.2

2.7

28. Bitumen is generally obtained from

Coal

Synthetic material

Petroleum product

Organic material

29. Sea sand used in structures causes

Disintegration

Efflorescence

All of these

Dampness

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

Low heat cement

Rapid hardening cement

Sulphate resisting cement

Ordinary Portland cement

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31. Pick up the correct statement from the following:

Fibrous fillers increase thermal resistance

The fillers are inert materials and they impart strength and hardness

Catalysts are added to assist and accelerate the hardening of resin

All of these

32. Cast steel is manufactured by

Open hearth process

Crucible process

Bessemer process

Cementation process

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

11.5 MPa

16 MPa

21 MPa

7 MPa

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

Over-burnt bricks

Refractory bricks

First class bricks

Under-burnt bricks

35. 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)

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

Plank

Baulk

Log

Batten

37. Cross cut saw is used for

Cutting soft stones

Cutting large blocks of stones

Cutting hard stones

Dressing stones

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

None of the above

Wood work

Both wood work and iron work

Iron work

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

15 %

22 %

20 %

25 %

40. The foliated structure is very common in

Sedimentary rocks

Igneous rocks

Metamorphic rocks

None of these

Building Materials MCQs Set-8

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