Building Materials MCQs Set-8

Page 1 of 4

1. Which of the following is a mineral?

Basalt

Granite

Quartz

Syenite

2. 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

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

20 m

40 m

30 m

10 m

4. Pick up the synthetic resin from the following:

All of these

Phenolic resin

Resorcinol resin

Urea resin

5. Addition of pozzolana to ordinary Portland cement increases

Heat of hydration

Permeability

Shrinkage

Bleeding

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

White lead

Zinc white

Ferrous oxide

Red lead

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

Baulk

Plank

Batten

Log

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

Silica

Water

Calcium oxide

Clay

9. Slate is formed by metamorphic action on

Lime stone

Sand stone

Shale

Granite

10. 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)

(i) and (ii)

(i) and (iv)

(iii) and (iv)

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11. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

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

Both (i) and (iii)

Only (i)

Both (i) and (ii)

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

20 %

25 %

22 %

15 %

13. 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 %

None of these

10 %

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

Calcareous rocks

Siliceous rocks

Sedimentary rocks

Argillaceous rocks

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

Trowel

Bolster

Scutch

Square

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

Wood work

Both wood work and iron work

None of the above

Iron work

17. Plastics are compounds of carbon with element

Oxygen

All of these

Nitrogen

Hydrogen

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

The compressive strength of the stone

The presence of soluble matter of stone

The hardness of the stone

The toughness of the stone

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

1200 kg

1500 kg

2000 kg

1800 kg

20. Bitumen is generally obtained from

Synthetic material

Organic material

Petroleum product

Coal

Page 3 of 4

21. Pick up the correct statement from the following:

The fillers are inert materials and they impart strength and hardness

Catalysts are added to assist and accelerate the hardening of resin

Fibrous fillers increase thermal resistance

All of these

22. The commonly used thinner in oil paints, is

(C) Both (a) and (b)

(A) Naphtha

(D) None the these

(B) Turpentine

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

11.5 MPa

16 MPa

21 MPa

7 MPa

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

Half brick thick

Two bricks thick

One and a half bricks thick

One brick thick

25. Generally wooden moulds are made from

Teak wood

Ply wood

Shishum wood

Deodar wood

26. Sea sand used in structures causes

Disintegration

Dampness

All of these

Efflorescence

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

1.7

1.5

2.7

2.2

28. Calcination of iron ores is done

All of these

By roasting in heaps

To remove carbonic acid

To remove moisture

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

Rapid hardening cement

Low heat cement

Sulphate resisting cement

Ordinary Portland cement

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

100 kg/cm2

90 kg/cm2

120 kg/cm2

75 kg/cm2

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31. 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

There is no sedimentary rock

Granite is the only igneous rock

Quartz and mica are minerals

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

5 %

15 %

35 %

25 %

33. Bulking of sand is caused due to

Clay contents

Viscosity

Surface moisture

Air voids

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

Under-burnt bricks

Refractory bricks

Over-burnt bricks

First class bricks

35. Pug mill is used for

Moulding of clay

Drying of bricks

Preparation of clay

Burning of bricks

36. Cross cut saw is used for

Cutting large blocks of stones

Dressing stones

Cutting soft stones

Cutting hard stones

37. The foliated structure is very common in

None of these

Igneous rocks

Sedimentary rocks

Metamorphic rocks

38. Glazing of clay products, is done

To protect them from atmospheric effect

To protect them from corrosive action

All of these

To improve their appearance

39. Age of a tree may be ascertained by

Radius of its stem

Number of branches

Number of annual rings

Circumference of its stem

40. Cast steel is manufactured by

Cementation process

Crucible process

Bessemer process

Open hearth process

Building Materials MCQs Set-8

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