Building Materials MCQs Set-8

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1. Plastics are compounds of carbon with element

Oxygen

All of these

Nitrogen

Hydrogen

2. 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 (ii)

(ii) and (iii)

(iii) and (iv)

(i) and (iv)

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

15 %

10 %

20 %

None of these

4. Generally wooden moulds are made from

Ply wood

Teak wood

Shishum wood

Deodar wood

5. The foliated structure is very common in

None of these

Metamorphic rocks

Igneous rocks

Sedimentary rocks

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

Sulphate resisting cement

Rapid hardening cement

Low heat cement

Ordinary Portland cement

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

Clay

Water

Silica

Calcium oxide

8. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Both (i) and (ii)

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

Only (i)

Both (i) and (iii)

9. Pick up the correct statement from the following:

All of these

Fibrous fillers increase thermal resistance

Catalysts are added to assist and accelerate the hardening of resin

The fillers are inert materials and they impart strength and hardness

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

Plank

Batten

Log

Baulk

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11. Bulking of sand is caused due to

Viscosity

Air voids

Clay contents

Surface moisture

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

75 kg/cm2

100 kg/cm2

90 kg/cm2

120 kg/cm2

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

16 MPa

7 MPa

11.5 MPa

21 MPa

14. Cross cut saw is used for

Cutting soft stones

Cutting hard stones

Dressing stones

Cutting large blocks of stones

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

Trowel

Square

Scutch

Bolster

16. Slate is formed by metamorphic action on

Lime stone

Shale

Granite

Sand stone

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

25 %

20 %

22 %

15 %

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

20 m

40 m

30 m

10 m

19. Which of the following is a mineral?

Basalt

Granite

Quartz

Syenite

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

First class bricks

Refractory bricks

Over-burnt bricks

Under-burnt bricks

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

Sedimentary rocks

Calcareous rocks

Argillaceous rocks

Siliceous rocks

22. Bitumen is generally obtained from

Coal

Organic material

Petroleum product

Synthetic material

23. Sea sand used in structures causes

All of these

Disintegration

Dampness

Efflorescence

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

2000 kg

1500 kg

1200 kg

1800 kg

25. Glazing of clay products, is done

All of these

To improve their appearance

To protect them from atmospheric effect

To protect them from corrosive action

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

25 %

5 %

15 %

35 %

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

Red lead

Zinc white

White lead

Ferrous oxide

28. Pick up the synthetic resin from the following:

Phenolic resin

Urea resin

All of these

Resorcinol resin

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

2.2

1.7

1.5

2.7

30. Age of a tree may be ascertained by

Circumference of its stem

Radius of its stem

Number of annual rings

Number of branches

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

Both wood work and iron work

None of the above

Wood work

Iron work

32. Addition of pozzolana to ordinary Portland cement increases

Heat of hydration

Permeability

Shrinkage

Bleeding

33. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

190 mm × 190 mm × 90 mm

200 mm × 200 mm × 100 mm

190 mm × 90 mm × 80 mm

34. Calcination of iron ores is done

To remove moisture

All of these

To remove carbonic acid

By roasting in heaps

35. Pug mill is used for

Drying of bricks

Moulding of clay

Burning of bricks

Preparation of clay

36. Cast steel is manufactured by

Open hearth process

Bessemer process

Crucible process

Cementation process

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

Half brick thick

Two bricks thick

One and a half bricks thick

One brick thick

38. 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

39. The commonly used thinner in oil paints, is

(B) Turpentine

(C) Both (a) and (b)

(D) None the these

(A) Naphtha

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

Granite is the only igneous rock

There is no sedimentary rock

Quartz and mica are minerals

Basalt and marble are the only metamorphic rocks

Building Materials MCQs Set-8

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