Building Materials MCQs Set-8

Page 1 of 4

1. Age of a tree may be ascertained by

Number of annual rings

Circumference of its stem

Number of branches

Radius of its stem

2. Generally wooden moulds are made from

Teak wood

Deodar wood

Ply wood

Shishum wood

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

Plank

Baulk

Log

Batten

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

2.7

1.5

1.7

2.2

5. Cast steel is manufactured by

Crucible process

Open hearth process

Bessemer process

Cementation process

6. Sea sand used in structures causes

All of these

Efflorescence

Disintegration

Dampness

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

Water

Calcium oxide

Silica

Clay

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

None of the above

Both wood work and iron work

Wood work

Iron work

9. Bitumen is generally obtained from

Synthetic material

Petroleum product

Organic material

Coal

10. Pug mill is used for

Burning of bricks

Preparation of clay

Drying of bricks

Moulding of clay

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

Calcareous rocks

Sedimentary rocks

Argillaceous rocks

Siliceous rocks

12. Which of the following is a mineral?

Syenite

Quartz

Granite

Basalt

13. Pick up the synthetic resin from the following:

Phenolic resin

All of these

Resorcinol resin

Urea resin

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

Trowel

Scutch

Square

Bolster

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

15 %

35 %

5 %

25 %

16. Plastics are compounds of carbon with element

Hydrogen

Oxygen

Nitrogen

All of these

17. 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 %

None of these

15 %

18. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Only (i)

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

Both (i) and (iii)

Both (i) and (ii)

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

Red lead

White lead

Ferrous oxide

Zinc white

20. Calcination of iron ores is done

All of these

By roasting in heaps

To remove moisture

To remove carbonic acid

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

One brick thick

One and a half bricks thick

Two bricks thick

Half brick thick

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

Ordinary Portland cement

Low heat cement

Sulphate resisting cement

Rapid hardening cement

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

There is no sedimentary rock

Basalt and marble are the only metamorphic rocks

Quartz and mica are minerals

Granite is the only igneous rock

24. Cross cut saw is used for

Cutting soft stones

Dressing stones

Cutting hard stones

Cutting large blocks of stones

25. Bulking of sand is caused due to

Clay contents

Viscosity

Surface moisture

Air voids

26. The foliated structure is very common in

Igneous rocks

Sedimentary rocks

None of these

Metamorphic rocks

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

30 m

20 m

40 m

10 m

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

90 kg/cm2

100 kg/cm2

75 kg/cm2

120 kg/cm2

29. 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

30. 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

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

Refractory bricks

Under-burnt bricks

First class bricks

Over-burnt bricks

32. Slate is formed by metamorphic action on

Granite

Sand stone

Shale

Lime stone

33. 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

(ii) and (iii)

(i) and (iv)

(iii) and (iv)

(i) and (ii)

34. The nominal size of the modular brick is

190 mm × 190 mm × 90 mm

190 mm × 90 mm × 80 mm

200 mm × 200 mm × 100 mm

200 mm × 100 mm × 100 mm

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

22 %

20 %

25 %

15 %

36. Pick up the correct statement from the following:

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

All of these

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

2000 kg

1800 kg

1500 kg

1200 kg

38. Addition of pozzolana to ordinary Portland cement increases

Bleeding

Heat of hydration

Permeability

Shrinkage

39. The commonly used thinner in oil paints, is

(D) None the these

(A) Naphtha

(B) Turpentine

(C) Both (a) and (b)

40. Glazing of clay products, is done

To improve their appearance

To protect them from corrosive action

To protect them from atmospheric effect

All of these

Building Materials MCQs Set-8

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