Building Materials MCQs Set-8

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1. Plastics are compounds of carbon with element

Oxygen

Hydrogen

All of these

Nitrogen

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

1800 kg

1200 kg

2000 kg

1500 kg

3. Pick up the synthetic resin from the following:

Phenolic resin

Resorcinol resin

All of these

Urea resin

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

22 %

15 %

20 %

25 %

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

Log

Baulk

Plank

Batten

6. Bitumen is generally obtained from

Organic material

Synthetic material

Coal

Petroleum product

7. 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)

(i) and (iv)

(iii) and (iv)

(ii) and (iii)

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

Iron work

None of the above

Both wood work and iron work

Wood work

9. Bulking of sand is caused due to

Viscosity

Clay contents

Air voids

Surface moisture

10. 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)

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

Over-burnt bricks

First class bricks

Refractory bricks

Under-burnt bricks

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

Basalt and marble are the only metamorphic rocks

Granite is the only igneous rock

There is no sedimentary rock

Quartz and mica are minerals

13. 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

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

5 %

35 %

25 %

15 %

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

100 kg/cm2

75 kg/cm2

120 kg/cm2

90 kg/cm2

16. Slate is formed by metamorphic action on

Granite

Shale

Sand stone

Lime stone

17. Generally wooden moulds are made from

Shishum wood

Teak wood

Deodar wood

Ply wood

18. Pick up the correct statement from the following:

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

All of these

19. Which of the following is a mineral?

Quartz

Granite

Basalt

Syenite

20. Cast steel is manufactured by

Open hearth process

Cementation process

Bessemer process

Crucible process

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21. Pug mill is used for

Burning of bricks

Preparation of clay

Drying of bricks

Moulding of clay

22. 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 %

None of these

15 %

10 %

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

Bolster

Scutch

Square

Trowel

24. Sea sand used in structures causes

Disintegration

All of these

Efflorescence

Dampness

25. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

190 mm × 90 mm × 80 mm

190 mm × 190 mm × 90 mm

200 mm × 200 mm × 100 mm

26. Addition of pozzolana to ordinary Portland cement increases

Bleeding

Heat of hydration

Permeability

Shrinkage

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

Calcium oxide

Clay

Water

Silica

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

The hardness of the stone

The toughness of the stone

The presence of soluble matter of stone

The compressive strength of the stone

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

40 m

20 m

30 m

10 m

30. Age of a tree may be ascertained by

Number of branches

Number of annual rings

Radius of its stem

Circumference of its stem

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31. The foliated structure is very common in

Metamorphic rocks

None of these

Igneous rocks

Sedimentary rocks

32. 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

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

1.7

2.7

1.5

2.2

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

Argillaceous rocks

Calcareous rocks

Sedimentary rocks

Siliceous rocks

35. The commonly used thinner in oil paints, is

(D) None the these

(C) Both (a) and (b)

(B) Turpentine

(A) Naphtha

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

Half brick thick

One and a half bricks thick

One brick thick

Two bricks thick

37. Cross cut saw is used for

Cutting hard stones

Cutting large blocks of stones

Dressing stones

Cutting soft stones

38. Calcination of iron ores is done

To remove moisture

To remove carbonic acid

All of these

By roasting in heaps

39. Glazing of clay products, is done

To improve their appearance

All of these

To protect them from corrosive action

To protect them from atmospheric effect

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

White lead

Zinc white

Red lead

Ferrous oxide

Building Materials MCQs Set-8

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