Building Materials MCQs Set-8

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

Silica

Calcium oxide

Clay

Water

2. Bulking of sand is caused due to

Viscosity

Air voids

Surface moisture

Clay contents

3. Addition of pozzolana to ordinary Portland cement increases

Bleeding

Heat of hydration

Permeability

Shrinkage

4. Slate is formed by metamorphic action on

Sand stone

Shale

Granite

Lime stone

5. The commonly used thinner in oil paints, is

(C) Both (a) and (b)

(A) Naphtha

(D) None the these

(B) Turpentine

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

10 m

20 m

30 m

40 m

7. Pick up the synthetic resin from the following:

Resorcinol resin

Urea resin

All of these

Phenolic resin

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

Log

Baulk

Batten

Plank

9. Pug mill is used for

Preparation of clay

Moulding of clay

Drying of bricks

Burning of bricks

10. Sea sand used in structures causes

Dampness

Efflorescence

Disintegration

All of these

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11. Generally wooden moulds are made from

Shishum wood

Teak wood

Ply wood

Deodar wood

12. The foliated structure is very common in

Igneous rocks

Metamorphic rocks

Sedimentary rocks

None of these

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

25 %

15 %

35 %

5 %

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

White lead

Zinc white

Red lead

Ferrous oxide

15. Bitumen is generally obtained from

Organic material

Synthetic material

Petroleum product

Coal

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

1.7

1.5

2.2

2.7

17. 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

20 %

10 %

15 %

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

1200 kg

2000 kg

1500 kg

1800 kg

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

Trowel

Bolster

Scutch

Square

20. Cast steel is manufactured by

Bessemer process

Open hearth process

Crucible process

Cementation process

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

16 MPa

11.5 MPa

21 MPa

7 MPa

22. Glazing of clay products, is done

To protect them from atmospheric effect

All of these

To protect them from corrosive action

To improve their appearance

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

Under-burnt bricks

Refractory bricks

First class bricks

Over-burnt bricks

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

75 kg/cm2

90 kg/cm2

100 kg/cm2

120 kg/cm2

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

The compressive strength of the stone

The presence of soluble matter of stone

The toughness of the stone

The hardness of the stone

26. The nominal size of the modular brick is

190 mm × 190 mm × 90 mm

200 mm × 100 mm × 100 mm

200 mm × 200 mm × 100 mm

190 mm × 90 mm × 80 mm

27. 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

(ii) and (iii)

(iii) and (iv)

(i) and (iv)

(i) and (ii)

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

Calcareous rocks

Siliceous rocks

Argillaceous rocks

Sedimentary rocks

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

Wood work

None of the above

Iron work

Both wood work and iron work

30. Cross cut saw is used for

Cutting soft stones

Cutting hard stones

Cutting large blocks of stones

Dressing stones

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31. Calcination of iron ores is done

By roasting in heaps

To remove moisture

All of these

To remove carbonic acid

32. Plastics are compounds of carbon with element

All of these

Hydrogen

Nitrogen

Oxygen

33. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Both (i) and (ii)

Both (i) and (iii)

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

Only (i)

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

20 %

22 %

25 %

15 %

35. Pick up the correct statement from the following:

The fillers are inert materials and they impart strength and hardness

All of these

Fibrous fillers increase thermal resistance

Catalysts are added to assist and accelerate the hardening of resin

36. Which of the following is a mineral?

Quartz

Syenite

Granite

Basalt

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

Low heat cement

Sulphate resisting cement

Rapid hardening cement

Ordinary Portland cement

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

Two bricks thick

Half brick thick

One brick thick

One and a half bricks thick

39. 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

Basalt and marble are the only metamorphic rocks

Quartz and mica are minerals

40. Age of a tree may be ascertained by

Number of branches

Circumference of its stem

Radius of its stem

Number of annual rings

Building Materials MCQs Set-8

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