Building Materials MCQs Set-8

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

Baulk

Batten

Plank

Log

2. Cross cut saw is used for

Cutting hard stones

Cutting large blocks of stones

Dressing stones

Cutting soft stones

3. Sea sand used in structures causes

Disintegration

Efflorescence

All of these

Dampness

4. Bitumen is generally obtained from

Synthetic material

Coal

Petroleum product

Organic material

5. Cast steel is manufactured by

Open hearth process

Bessemer process

Cementation process

Crucible process

6. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Both (i) and (ii)

Only (i)

Both (i) and (iii)

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

7. 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

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

Silica

Calcium oxide

Water

Clay

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

Granite is the only igneous rock

Basalt and marble are the only metamorphic rocks

Quartz and mica are minerals

There is no sedimentary rock

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

Ordinary Portland cement

Low heat cement

Rapid hardening cement

Sulphate resisting cement

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11. Plastics are compounds of carbon with element

All of these

Hydrogen

Nitrogen

Oxygen

12. 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

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

Scutch

Square

Trowel

Bolster

14. Glazing of clay products, is done

To protect them from atmospheric effect

All of these

To improve their appearance

To protect them from corrosive action

15. Pick up the synthetic resin from the following:

All of these

Urea resin

Resorcinol resin

Phenolic resin

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

Both wood work and iron work

Iron work

None of the above

Wood work

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

One and a half bricks thick

Half brick thick

One brick thick

Two bricks thick

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

Sedimentary rocks

Argillaceous rocks

Calcareous rocks

Siliceous rocks

19. The commonly used thinner in oil paints, is

(D) None the these

(B) Turpentine

(A) Naphtha

(C) Both (a) and (b)

20. Slate is formed by metamorphic action on

Shale

Granite

Sand stone

Lime stone

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

First class bricks

Under-burnt bricks

Refractory bricks

Over-burnt bricks

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

25 %

5 %

35 %

15 %

23. The foliated structure is very common in

Sedimentary rocks

Metamorphic rocks

Igneous rocks

None of these

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

30 m

10 m

20 m

40 m

25. Calcination of iron ores is done

All of these

To remove moisture

To remove carbonic acid

By roasting in heaps

26. Age of a tree may be ascertained by

Radius of its stem

Number of branches

Number of annual rings

Circumference of its stem

27. Generally wooden moulds are made from

Ply wood

Shishum wood

Deodar wood

Teak wood

28. Pick up the correct statement from the following:

The fillers are inert materials and they impart strength and hardness

Catalysts are added to assist and accelerate the hardening of resin

Fibrous fillers increase thermal resistance

All of these

29. Pug mill is used for

Preparation of clay

Burning of bricks

Drying of bricks

Moulding of clay

30. Addition of pozzolana to ordinary Portland cement increases

Heat of hydration

Shrinkage

Permeability

Bleeding

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

Zinc white

White lead

Ferrous oxide

Red lead

32. 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

33. Which of the following is a mineral?

Syenite

Basalt

Granite

Quartz

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

1.5

2.7

1.7

2.2

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

100 kg/cm2

75 kg/cm2

120 kg/cm2

90 kg/cm2

36. Bulking of sand is caused due to

Viscosity

Surface moisture

Air voids

Clay contents

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

22 %

15 %

20 %

25 %

38. 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 %

None of these

15 %

20 %

39. 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

40. 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)

(i) and (iv)

(ii) and (iii)

Building Materials MCQs Set-8

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