Building Materials MCQs Set-8

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

Quartz and mica are minerals

Granite is the only igneous rock

Basalt and marble are the only metamorphic rocks

There is no sedimentary rock

2. Pick up the correct statement from the following:

Catalysts are added to assist and accelerate the hardening of resin

All of these

The fillers are inert materials and they impart strength and hardness

Fibrous fillers increase thermal resistance

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

The toughness of the stone

The hardness of the stone

The presence of soluble matter of stone

The compressive strength of the stone

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

1.5

1.7

2.7

2.2

5. Calcination of iron ores is done

To remove carbonic acid

By roasting in heaps

To remove moisture

All of these

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

Calcium oxide

Clay

Silica

Water

7. 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

8. Cross cut saw is used for

Dressing stones

Cutting soft stones

Cutting hard stones

Cutting large blocks of stones

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

21 MPa

11.5 MPa

7 MPa

16 MPa

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

Argillaceous rocks

Calcareous rocks

Sedimentary rocks

Siliceous rocks

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

Plank

Baulk

Batten

Log

13. 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

14. The foliated structure is very common in

Metamorphic rocks

Igneous rocks

None of these

Sedimentary rocks

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

Under-burnt bricks

Over-burnt bricks

First class bricks

Refractory bricks

16. The nominal size of the modular brick is

190 mm × 90 mm × 80 mm

200 mm × 200 mm × 100 mm

200 mm × 100 mm × 100 mm

190 mm × 190 mm × 90 mm

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

15 %

35 %

25 %

5 %

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

Red lead

White lead

Zinc white

Ferrous oxide

19. Plastics are compounds of carbon with element

Nitrogen

All of these

Oxygen

Hydrogen

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

Both wood work and iron work

Wood work

None of the above

Iron work

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21. Pick up the synthetic resin from the following:

Phenolic resin

Urea resin

Resorcinol resin

All of these

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

10 m

20 m

40 m

30 m

23. Slate is formed by metamorphic action on

Lime stone

Granite

Shale

Sand stone

24. Generally wooden moulds are made from

Deodar wood

Ply wood

Teak wood

Shishum wood

25. Bulking of sand is caused due to

Surface moisture

Air voids

Viscosity

Clay contents

26. Addition of pozzolana to ordinary Portland cement increases

Bleeding

Permeability

Heat of hydration

Shrinkage

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

1500 kg

2000 kg

1200 kg

1800 kg

28. 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

10 %

15 %

29. Pug mill is used for

Drying of bricks

Preparation of clay

Burning of bricks

Moulding of clay

30. 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)

(ii) and (iii)

(iii) and (iv)

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31. The commonly used thinner in oil paints, is

(A) Naphtha

(C) Both (a) and (b)

(D) None the these

(B) Turpentine

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

Scutch

Bolster

Square

Trowel

33. Sea sand used in structures causes

Dampness

Efflorescence

All of these

Disintegration

34. Bitumen is generally obtained from

Organic material

Petroleum product

Coal

Synthetic material

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

15 %

22 %

20 %

25 %

36. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

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

Only (i)

Both (i) and (iii)

Both (i) and (ii)

37. Age of a tree may be ascertained by

Circumference of its stem

Radius of its stem

Number of branches

Number of annual rings

38. Cast steel is manufactured by

Cementation process

Crucible process

Open hearth process

Bessemer process

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

75 kg/cm2

100 kg/cm2

90 kg/cm2

120 kg/cm2

40. Which of the following is a mineral?

Quartz

Granite

Basalt

Syenite

Building Materials MCQs Set-8

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