Building Materials MCQs Set-8

Page 1 of 4

1. Generally wooden moulds are made from

Shishum wood

Teak wood

Ply wood

Deodar wood

2. The nominal size of the modular brick is

200 mm × 100 mm × 100 mm

200 mm × 200 mm × 100 mm

190 mm × 190 mm × 90 mm

190 mm × 90 mm × 80 mm

3. Pick up the synthetic resin from the following:

Phenolic resin

Resorcinol resin

All of these

Urea resin

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

There is no sedimentary rock

Basalt and marble are the only metamorphic rocks

Granite is the only igneous rock

Quartz and mica are minerals

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

10 m

30 m

20 m

40 m

6. Calcination of iron ores is done

By roasting in heaps

To remove moisture

All of these

To remove carbonic acid

7. 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

8. 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

9. Bitumen is generally obtained from

Synthetic material

Coal

Organic material

Petroleum product

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

2.2

1.7

1.5

2.7

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11. Sandstone is a

(i) Sedimentary rock

(ii) Aqueous rock

(iii) Siliceous rock

The correct answer is

Both (i) and (iii)

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

Only (i)

Both (i) and (ii)

12. Slate is formed by metamorphic action on

Lime stone

Granite

Sand stone

Shale

13. Pick up the correct statement from the following:

All of these

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

14. 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

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

5 %

15 %

35 %

25 %

16. Age of a tree may be ascertained by

Number of annual rings

Circumference of its stem

Number of branches

Radius of its stem

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

25 %

20 %

15 %

22 %

18. Cast steel is manufactured by

Open hearth process

Crucible process

Bessemer process

Cementation process

19. Pug mill is used for

Burning of bricks

Drying of bricks

Preparation of clay

Moulding of clay

20. Sea sand used in structures causes

Efflorescence

Disintegration

All of these

Dampness

Page 3 of 4

21. 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)

(i) and (ii)

(iii) and (iv)

(ii) and (iii)

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

Argillaceous rocks

Calcareous rocks

Siliceous rocks

Sedimentary rocks

23. Cross cut saw is used for

Cutting hard stones

Dressing stones

Cutting large blocks of stones

Cutting soft stones

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

75 kg/cm2

120 kg/cm2

90 kg/cm2

100 kg/cm2

25. Glazing of clay products, is done

All of these

To protect them from atmospheric effect

To protect them from corrosive action

To improve their appearance

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

1500 kg

1800 kg

2000 kg

1200 kg

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

Under-burnt bricks

Refractory bricks

First class bricks

Over-burnt bricks

28. Addition of pozzolana to ordinary Portland cement increases

Shrinkage

Heat of hydration

Bleeding

Permeability

29. 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 %

None of these

20 %

10 %

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

Rapid hardening cement

Ordinary Portland cement

Low heat cement

Sulphate resisting cement

Page 4 of 4

31. Plastics are compounds of carbon with element

All of these

Oxygen

Hydrogen

Nitrogen

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

Batten

Plank

Log

Baulk

33. Bulking of sand is caused due to

Clay contents

Air voids

Surface moisture

Viscosity

34. Which of the following is a mineral?

Basalt

Quartz

Syenite

Granite

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

Scutch

Square

Bolster

Trowel

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

White lead

Ferrous oxide

Red lead

Zinc white

37. The commonly used thinner in oil paints, is

(B) Turpentine

(C) Both (a) and (b)

(A) Naphtha

(D) None the these

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

Clay

Calcium oxide

Water

Silica

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

None of the above

Both wood work and iron work

Wood work

Iron work

40. The foliated structure is very common in

Igneous rocks

Sedimentary rocks

Metamorphic rocks

None of these

Building Materials MCQs Set-8

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