Building Materials MCQs Set-8

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1. The commonly used thinner in oil paints, is

(B) Turpentine

(C) Both (a) and (b)

(A) Naphtha

(D) None the these

2. Which of the following is a mineral?

Quartz

Granite

Syenite

Basalt

3. Cast steel is manufactured by

Cementation process

Bessemer process

Open hearth process

Crucible process

4. Addition of pozzolana to ordinary Portland cement increases

Bleeding

Heat of hydration

Shrinkage

Permeability

5. Bulking of sand is caused due to

Clay contents

Air voids

Surface moisture

Viscosity

6. Pick up the correct statement from the following:

Catalysts are added to assist and accelerate the hardening of resin

Fibrous fillers increase thermal resistance

The fillers are inert materials and they impart strength and hardness

All of these

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

21 MPa

11.5 MPa

16 MPa

7 MPa

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

Iron work

None of the above

Wood work

Both wood work and iron work

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

There is no sedimentary rock

Quartz and mica are minerals

Basalt and marble are the only metamorphic rocks

Granite is the only igneous rock

10. 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

None of these

15 %

10 %

20 %

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11. 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

12. Cross cut saw is used for

Cutting large blocks of stones

Cutting hard stones

Dressing stones

Cutting soft stones

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

Red lead

Zinc white

Ferrous oxide

White lead

14. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

190 mm × 190 mm × 90 mm

190 mm × 90 mm × 80 mm

200 mm × 200 mm × 100 mm

15. Calcination of iron ores is done

To remove carbonic acid

All of these

To remove moisture

By roasting in heaps

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

30 m

20 m

40 m

10 m

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

The hardness of the stone

The compressive strength of the stone

The presence of soluble matter of stone

The toughness of the stone

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

1200 kg

1800 kg

1500 kg

2000 kg

19. Sea sand used in structures causes

Efflorescence

Disintegration

Dampness

All of these

20. Pug mill is used for

Burning of bricks

Preparation of clay

Drying of bricks

Moulding of clay

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

Plank

Baulk

Log

Batten

22. Glazing of clay products, is done

To protect them from corrosive action

All of these

To protect them from atmospheric effect

To improve their appearance

23. 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

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

120 kg/cm2

90 kg/cm2

100 kg/cm2

75 kg/cm2

25. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Both (i) and (iii)

Both (i) and (ii)

Only (i)

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

26. Slate is formed by metamorphic action on

Shale

Granite

Sand stone

Lime stone

27. Plastics are compounds of carbon with element

Nitrogen

Oxygen

All of these

Hydrogen

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

Clay

Silica

Water

Calcium oxide

29. Bitumen is generally obtained from

Organic material

Synthetic material

Petroleum product

Coal

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

Square

Scutch

Trowel

Bolster

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31. The foliated structure is very common in

Sedimentary rocks

None of these

Metamorphic rocks

Igneous rocks

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

Calcareous rocks

Siliceous rocks

Sedimentary rocks

Argillaceous rocks

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

25 %

15 %

22 %

20 %

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

Over-burnt bricks

First class bricks

Refractory bricks

Under-burnt bricks

35. Age of a tree may be ascertained by

Radius of its stem

Circumference of its stem

Number of branches

Number of annual rings

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

2.2

2.7

1.7

1.5

37. Pick up the synthetic resin from the following:

All of these

Phenolic resin

Urea resin

Resorcinol resin

38. Generally wooden moulds are made from

Deodar wood

Ply wood

Teak wood

Shishum wood

39. 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)

(i) and (iv)

(iii) and (iv)

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

35 %

15 %

25 %

5 %

Building Materials MCQs Set-8

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