Building Materials MCQs Set-8

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1. Cast steel is manufactured by

Cementation process

Open hearth process

Bessemer process

Crucible process

2. 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

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

1800 kg

1200 kg

2000 kg

1500 kg

4. Plastics are compounds of carbon with element

Hydrogen

Oxygen

Nitrogen

All of these

5. Slate is formed by metamorphic action on

Granite

Lime stone

Sand stone

Shale

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

10 m

20 m

30 m

40 m

7. Pick up the correct statement from the following:

All of these

Catalysts are added to assist and accelerate the hardening of resin

Fibrous fillers increase thermal resistance

The fillers are inert materials and they impart strength and hardness

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

25 %

22 %

20 %

15 %

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

One brick thick

One and a half bricks thick

Half brick thick

Two bricks thick

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

Batten

Log

Plank

Baulk

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11. Generally wooden moulds are made from

Deodar wood

Teak wood

Ply wood

Shishum wood

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

Refractory bricks

First class bricks

Over-burnt bricks

Under-burnt bricks

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

Scutch

Bolster

Square

Trowel

14. Addition of pozzolana to ordinary Portland cement increases

Shrinkage

Heat of hydration

Permeability

Bleeding

15. Sea sand used in structures causes

Disintegration

All of these

Dampness

Efflorescence

16. Bulking of sand is caused due to

Clay contents

Surface moisture

Viscosity

Air voids

17. Which of the following is a mineral?

Granite

Quartz

Basalt

Syenite

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

Both wood work and iron work

Wood work

None of the above

Iron work

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

Siliceous rocks

Calcareous rocks

Sedimentary rocks

Argillaceous rocks

20. Bitumen is generally obtained from

Synthetic material

Organic material

Coal

Petroleum product

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21. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

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

Only (i)

Both (i) and (iii)

Both (i) and (ii)

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

Zinc white

White lead

Ferrous oxide

Red lead

23. Pug mill is used for

Burning of bricks

Moulding of clay

Preparation of clay

Drying of bricks

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

100 kg/cm2

120 kg/cm2

75 kg/cm2

90 kg/cm2

25. 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 %

15 %

None of these

20 %

26. Age of a tree may be ascertained by

Circumference of its stem

Radius of its stem

Number of branches

Number of annual rings

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

1.5

2.7

1.7

2.2

28. 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

29. Pick up the synthetic resin from the following:

Urea resin

All of these

Resorcinol resin

Phenolic resin

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

Calcium oxide

Silica

Water

Clay

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31. Cross cut saw is used for

Cutting hard stones

Dressing stones

Cutting large blocks of stones

Cutting soft stones

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

5 %

25 %

15 %

35 %

33. 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

Quartz and mica are minerals

Granite is the only igneous rock

There is no sedimentary rock

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

11.5 MPa

21 MPa

7 MPa

16 MPa

35. Calcination of iron ores is done

To remove carbonic acid

By roasting in heaps

To remove moisture

All of these

36. 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

(iii) and (iv)

(i) and (ii)

(ii) and (iii)

(i) and (iv)

37. 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

38. The foliated structure is very common in

None of these

Igneous rocks

Sedimentary rocks

Metamorphic rocks

39. Glazing of clay products, is done

To protect them from corrosive action

To improve their appearance

All of these

To protect them from atmospheric effect

40. The commonly used thinner in oil paints, is

(C) Both (a) and (b)

(A) Naphtha

(B) Turpentine

(D) None the these

Building Materials MCQs Set-8

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