Building Materials MCQs Set-8

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1. Addition of pozzolana to ordinary Portland cement increases

Permeability

Heat of hydration

Shrinkage

Bleeding

2. 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 %

20 %

None of these

3. Generally wooden moulds are made from

Shishum wood

Ply wood

Teak wood

Deodar wood

4. Age of a tree may be ascertained by

Number of annual rings

Radius of its stem

Circumference of its stem

Number of branches

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

15 %

25 %

20 %

22 %

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

30 m

20 m

40 m

10 m

7. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Only (i)

Both (i) and (ii)

Both (i) and (iii)

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

8. Bulking of sand is caused due to

Clay contents

Air voids

Viscosity

Surface moisture

9. Glazing of clay products, is done

To protect them from corrosive action

All of these

To improve their appearance

To protect them from atmospheric effect

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

Water

Calcium oxide

Silica

Clay

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11. 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)

(iii) and (iv)

(i) and (ii)

(ii) and (iii)

12. Bitumen is generally obtained from

Organic material

Coal

Petroleum product

Synthetic material

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

Iron work

Wood work

Both wood work and iron work

None of the above

14. Which of the following is a mineral?

Quartz

Basalt

Granite

Syenite

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

Zinc white

White lead

Red lead

Ferrous oxide

16. Calcination of iron ores is done

To remove carbonic acid

All of these

By roasting in heaps

To remove moisture

17. Pug mill is used for

Burning of bricks

Moulding of clay

Drying of bricks

Preparation of clay

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

Trowel

Bolster

Scutch

Square

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

Siliceous rocks

Sedimentary rocks

Argillaceous rocks

Calcareous rocks

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

15 %

35 %

25 %

5 %

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21. 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

22. Cast steel is manufactured by

Bessemer process

Cementation process

Crucible process

Open hearth process

23. Slate is formed by metamorphic action on

Sand stone

Lime stone

Granite

Shale

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

One and a half bricks thick

One brick thick

Two bricks thick

Half brick thick

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

The presence of soluble matter of stone

The compressive strength of the stone

The hardness of the stone

The toughness of the stone

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

2.2

1.7

1.5

2.7

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

Under-burnt bricks

Over-burnt bricks

Refractory bricks

First class bricks

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

Ordinary Portland cement

Sulphate resisting cement

Rapid hardening cement

Low heat cement

29. Pick up the synthetic resin from the following:

All of these

Urea resin

Resorcinol resin

Phenolic resin

30. 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

There is no sedimentary rock

Quartz and mica are minerals

Granite is the only igneous rock

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31. Sea sand used in structures causes

Disintegration

Efflorescence

All of these

Dampness

32. The foliated structure is very common in

Sedimentary rocks

Igneous rocks

None of these

Metamorphic rocks

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

90 kg/cm2

75 kg/cm2

100 kg/cm2

120 kg/cm2

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

1200 kg

1500 kg

1800 kg

2000 kg

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

Plank

Batten

Log

Baulk

36. Cross cut saw is used for

Cutting hard stones

Cutting large blocks of stones

Cutting soft stones

Dressing stones

37. Plastics are compounds of carbon with element

Oxygen

All of these

Nitrogen

Hydrogen

38. The nominal size of the modular brick is

190 mm × 90 mm × 80 mm

200 mm × 100 mm × 100 mm

190 mm × 190 mm × 90 mm

200 mm × 200 mm × 100 mm

39. Pick up the correct statement from the following:

All of these

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

40. The commonly used thinner in oil paints, is

(B) Turpentine

(C) Both (a) and (b)

(D) None the these

(A) Naphtha

Building Materials MCQs Set-8

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