Building Materials MCQs Set-8

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1. The nominal size of the modular brick is

200 mm × 200 mm × 100 mm

200 mm × 100 mm × 100 mm

190 mm × 190 mm × 90 mm

190 mm × 90 mm × 80 mm

2. Bulking of sand is caused due to

Surface moisture

Air voids

Clay contents

Viscosity

3. 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

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 hardness of the stone

The toughness of the stone

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

10 m

20 m

40 m

30 m

6. Slate is formed by metamorphic action on

Shale

Granite

Sand stone

Lime stone

7. Pick up the synthetic resin from the following:

Urea resin

All of these

Resorcinol resin

Phenolic resin

8. 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)

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

White lead

Red lead

Zinc white

Ferrous oxide

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

Batten

Plank

Baulk

Log

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11. 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

12. Calcination of iron ores is done

To remove carbonic acid

All of these

By roasting in heaps

To remove moisture

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

1.7

1.5

2.2

2.7

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

Calcareous rocks

Argillaceous rocks

Siliceous rocks

Sedimentary rocks

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

Half brick thick

One brick thick

One and a half bricks thick

Two bricks thick

16. Sea sand used in structures causes

Dampness

Efflorescence

All of these

Disintegration

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

75 kg/cm2

100 kg/cm2

90 kg/cm2

120 kg/cm2

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

Refractory bricks

Over-burnt bricks

Under-burnt bricks

First class bricks

19. Pug mill is used for

Drying of bricks

Moulding of clay

Preparation of clay

Burning of bricks

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

Rapid hardening cement

Ordinary Portland cement

Sulphate resisting cement

Low heat cement

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21. Cast steel is manufactured by

Crucible process

Open hearth process

Cementation process

Bessemer process

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

1800 kg

1500 kg

1200 kg

2000 kg

23. Cross cut saw is used for

Dressing stones

Cutting hard stones

Cutting large blocks of stones

Cutting soft stones

24. 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)

(iii) and (iv)

(i) and (ii)

25. The foliated structure is very common in

Igneous rocks

Sedimentary rocks

None of these

Metamorphic rocks

26. Addition of pozzolana to ordinary Portland cement increases

Heat of hydration

Shrinkage

Permeability

Bleeding

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

Both wood work and iron work

None of the above

Wood work

Iron work

28. Generally wooden moulds are made from

Ply wood

Teak wood

Deodar wood

Shishum wood

29. Plastics are compounds of carbon with element

All of these

Oxygen

Nitrogen

Hydrogen

30. The commonly used thinner in oil paints, is

(D) None the these

(A) Naphtha

(C) Both (a) and (b)

(B) Turpentine

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

25 %

15 %

35 %

5 %

32. Bitumen is generally obtained from

Synthetic material

Coal

Organic material

Petroleum product

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

15 %

20 %

22 %

25 %

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

7 MPa

16 MPa

21 MPa

11.5 MPa

35. Age of a tree may be ascertained by

Circumference of its stem

Number of branches

Number of annual rings

Radius of its stem

36. Pick up the correct statement from the following:

All of these

The fillers are inert materials and they impart strength and hardness

Fibrous fillers increase thermal resistance

Catalysts are added to assist and accelerate the hardening of resin

37. Which of the following is a mineral?

Syenite

Granite

Basalt

Quartz

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

Clay

Silica

Water

Calcium oxide

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

Trowel

Scutch

Bolster

Square

40. Glazing of clay products, is done

To protect them from atmospheric effect

All of these

To protect them from corrosive action

To improve their appearance

Building Materials MCQs Set-8

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