Building Materials MCQs Set-8

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

Zinc white

Red lead

Ferrous oxide

White lead

2. Calcination of iron ores is done

All of these

To remove moisture

By roasting in heaps

To remove carbonic acid

3. Age of a tree may be ascertained by

Circumference of its stem

Number of branches

Radius of its stem

Number of annual rings

4. The foliated structure is very common in

Metamorphic rocks

Igneous rocks

None of these

Sedimentary rocks

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

20 m

30 m

40 m

10 m

6. 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

There is no sedimentary rock

Quartz and mica are minerals

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

Bolster

Scutch

Square

Trowel

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

Wood work

Iron work

Both wood work and iron work

None of the above

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

Under-burnt bricks

First class bricks

Over-burnt bricks

Refractory bricks

10. Bitumen is generally obtained from

Organic material

Synthetic material

Petroleum product

Coal

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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

(iii) and (iv)

(i) and (ii)

(i) and (iv)

(ii) and (iii)

12. Pick up the synthetic resin from the following:

Resorcinol resin

Urea resin

Phenolic resin

All of these

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

Calcareous rocks

Siliceous rocks

Argillaceous rocks

Sedimentary rocks

14. Bulking of sand is caused due to

Viscosity

Air voids

Clay contents

Surface moisture

15. Addition of pozzolana to ordinary Portland cement increases

Heat of hydration

Permeability

Bleeding

Shrinkage

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

25 %

15 %

5 %

35 %

17. Pug mill is used for

Burning of bricks

Drying of bricks

Preparation of clay

Moulding of clay

18. Slate is formed by metamorphic action on

Shale

Granite

Sand stone

Lime stone

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

1.5

1.7

2.7

2.2

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

Plank

Baulk

Batten

Log

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

2000 kg

1200 kg

1800 kg

1500 kg

22. Generally wooden moulds are made from

Ply wood

Deodar wood

Shishum wood

Teak wood

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

Sulphate resisting cement

Ordinary Portland cement

Rapid hardening cement

Low heat cement

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

Calcium oxide

Water

Clay

Silica

25. 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

26. The nominal size of the modular brick is

190 mm × 190 mm × 90 mm

190 mm × 90 mm × 80 mm

200 mm × 100 mm × 100 mm

200 mm × 200 mm × 100 mm

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

25 %

20 %

22 %

15 %

28. 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

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

120 kg/cm2

75 kg/cm2

90 kg/cm2

100 kg/cm2

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. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Only (i)

Both (i) and (iii)

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

Both (i) and (ii)

32. Cross cut saw is used for

Cutting large blocks of stones

Cutting hard stones

Cutting soft stones

Dressing stones

33. 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

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

The compressive strength of the stone

The toughness of the stone

The presence of soluble matter of stone

The hardness of the stone

35. Plastics are compounds of carbon with element

Nitrogen

Oxygen

Hydrogen

All of these

36. Glazing of clay products, is done

To protect them from corrosive action

To protect them from atmospheric effect

All of these

To improve their appearance

37. Which of the following is a mineral?

Quartz

Syenite

Granite

Basalt

38. Cast steel is manufactured by

Crucible process

Bessemer process

Cementation process

Open hearth process

39. Sea sand used in structures causes

All of these

Efflorescence

Dampness

Disintegration

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

21 MPa

7 MPa

11.5 MPa

16 MPa

Building Materials MCQs Set-8

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