Building Materials MCQs Set-8

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

Siliceous rocks

Argillaceous rocks

Calcareous rocks

Sedimentary rocks

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

Scutch

Square

Bolster

Trowel

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

2.2

1.7

2.7

1.5

4. Plastics are compounds of carbon with element

Hydrogen

Oxygen

Nitrogen

All of these

5. 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

6. Generally wooden moulds are made from

Teak wood

Shishum wood

Ply wood

Deodar wood

7. 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

8. Bulking of sand is caused due to

Surface moisture

Clay contents

Viscosity

Air voids

9. Glazing of clay products, is done

To protect them from corrosive action

All of these

To improve their appearance

To protect them from atmospheric effect

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

22 %

25 %

15 %

20 %

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11. The nominal size of the modular brick is

190 mm × 190 mm × 90 mm

200 mm × 200 mm × 100 mm

190 mm × 90 mm × 80 mm

200 mm × 100 mm × 100 mm

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

10 m

40 m

20 m

30 m

13. Calcination of iron ores is done

To remove carbonic acid

To remove moisture

All of these

By roasting in heaps

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

Half brick thick

One brick thick

Two bricks thick

One and a half bricks thick

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

Water

Silica

Calcium oxide

Clay

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

The compressive strength of the stone

The toughness of the stone

The hardness of the stone

The presence of soluble matter of stone

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

5 %

15 %

35 %

25 %

18. The foliated structure is very common in

Igneous rocks

Metamorphic rocks

None of these

Sedimentary rocks

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

Sulphate resisting cement

Rapid hardening cement

Ordinary Portland cement

Low heat cement

20. Pick up the synthetic resin from the following:

Phenolic resin

All of these

Urea resin

Resorcinol resin

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21. The commonly used thinner in oil paints, is

(C) Both (a) and (b)

(A) Naphtha

(B) Turpentine

(D) None the these

22. Sea sand used in structures causes

Efflorescence

Dampness

All of these

Disintegration

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

7 MPa

21 MPa

16 MPa

11.5 MPa

24. Slate is formed by metamorphic action on

Lime stone

Sand stone

Shale

Granite

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 %

20 %

10 %

None of these

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

100 kg/cm2

75 kg/cm2

90 kg/cm2

120 kg/cm2

27. Which of the following is a mineral?

Granite

Syenite

Quartz

Basalt

28. Cast steel is manufactured by

Cementation process

Open hearth process

Bessemer process

Crucible process

29. Bitumen is generally obtained from

Synthetic material

Petroleum product

Organic material

Coal

30. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

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

Both (i) and (ii)

Both (i) and (iii)

Only (i)

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31. Age of a tree may be ascertained by

Radius of its stem

Number of branches

Number of annual rings

Circumference of its stem

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

Log

Plank

Baulk

Batten

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

Refractory bricks

First class bricks

Under-burnt bricks

Over-burnt bricks

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

Both wood work and iron work

Wood work

Iron work

None of the above

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

Red lead

Ferrous oxide

White lead

Zinc white

36. Cross cut saw is used for

Cutting soft stones

Cutting large blocks of stones

Dressing stones

Cutting hard stones

37. Pug mill is used for

Drying of bricks

Burning of bricks

Preparation of clay

Moulding of clay

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

1200 kg

1800 kg

2000 kg

1500 kg

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

(iii) and (iv)

(ii) and (iii)

(i) and (iv)

(i) and (ii)

40. Addition of pozzolana to ordinary Portland cement increases

Permeability

Heat of hydration

Shrinkage

Bleeding

Building Materials MCQs Set-8

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