Building Materials MCQs Set-8

Page 1 of 4

1. 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 (ii)

Both (i) and (iii)

2. Bitumen is generally obtained from

Synthetic material

Coal

Petroleum product

Organic material

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

1.5

2.2

1.7

2.7

4. Addition of pozzolana to ordinary Portland cement increases

Bleeding

Permeability

Shrinkage

Heat of hydration

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

100 kg/cm2

90 kg/cm2

75 kg/cm2

120 kg/cm2

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

1500 kg

1200 kg

1800 kg

2000 kg

7. Generally wooden moulds are made from

Teak wood

Deodar wood

Ply wood

Shishum wood

8. Glazing of clay products, is done

All of these

To improve their appearance

To protect them from corrosive action

To protect them from atmospheric effect

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

5 %

25 %

35 %

15 %

10. 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

Page 2 of 4

11. Age of a tree may be ascertained by

Number of annual rings

Radius of its stem

Number of branches

Circumference of its stem

12. The nominal size of the modular brick is

190 mm × 90 mm × 80 mm

200 mm × 100 mm × 100 mm

190 mm × 190 mm × 90 mm

200 mm × 200 mm × 100 mm

13. Which of the following is a mineral?

Quartz

Basalt

Syenite

Granite

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

25 %

15 %

20 %

22 %

15. Bulking of sand is caused due to

Viscosity

Clay contents

Surface moisture

Air voids

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

White lead

Ferrous oxide

Zinc white

Red lead

17. Sea sand used in structures causes

Dampness

Efflorescence

Disintegration

All of these

18. 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 (iv)

(ii) and (iii)

(iii) and (iv)

(i) and (ii)

19. 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 %

10 %

20 %

None of these

20. Slate is formed by metamorphic action on

Sand stone

Granite

Shale

Lime stone

Page 3 of 4

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

Log

Plank

Batten

Baulk

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

Bolster

Trowel

Scutch

Square

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

Wood work

None of the above

Iron work

Both wood work and iron work

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

21 MPa

16 MPa

11.5 MPa

7 MPa

25. Plastics are compounds of carbon with element

Hydrogen

All of these

Oxygen

Nitrogen

26. Cross cut saw is used for

Dressing stones

Cutting soft stones

Cutting hard stones

Cutting large blocks of stones

27. The foliated structure is very common in

None of these

Igneous rocks

Sedimentary rocks

Metamorphic rocks

28. The commonly used thinner in oil paints, is

(B) Turpentine

(C) Both (a) and (b)

(A) Naphtha

(D) None the these

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

Water

Calcium oxide

Clay

Silica

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

Argillaceous rocks

Siliceous rocks

Calcareous rocks

Sedimentary rocks

Page 4 of 4

31. Calcination of iron ores is done

By roasting in heaps

All of these

To remove carbonic acid

To remove moisture

32. Pick up the synthetic resin from the following:

Resorcinol resin

All of these

Phenolic resin

Urea resin

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

Low heat cement

Rapid hardening cement

Sulphate resisting cement

Ordinary Portland cement

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

Over-burnt bricks

First class bricks

Under-burnt bricks

Refractory bricks

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

40 m

10 m

20 m

30 m

36. 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

37. Pug mill is used for

Drying of bricks

Moulding of clay

Preparation of clay

Burning of bricks

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

One and a half bricks thick

Two bricks thick

Half brick thick

One brick thick

39. Cast steel is manufactured by

Open hearth process

Crucible process

Bessemer process

Cementation process

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

The presence of soluble matter of stone

The hardness of the stone

The compressive strength of the stone

The toughness of the stone

Building Materials MCQs Set-8

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