Construction Materials Online Test - Paper 3

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Vikash chaudhary

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Total Questions: 50
Time Allotted: 50 minutes
Passing Score: 70%
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Certificate: Yes
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1 / 50

1. A good building stone should have

a) all of of the below

b) good appearance and color

c) resistance to fire

d) hardness and toughness

2 / 50

2. *The stone suitable for rubble masonry should be:

a) hard

b) tough

c) heavy

d) light

3 / 50

3. *Elastomers can extend up to

a) ten times their original dimensions

b) seven times their original dimensions

c) five times their original dimensions

d) three times their original dimensions

4 / 50

4. *The type of paint whose main constituent is white or colored cement and is used to protect plastered surfaces, brickwork, masonry in damp places is called

a) luminous paint

b) cement paint

c) bituminous paint

d) anticorrosive paint

5 / 50

5. The possibility of bleeding, segregation, and laitance is reduced by

a) coloring agent

b) bleeding agent

c) waterproofer

d) air-entraining agent

6 / 50

6. *Conglomerate is a

a) sedimentary rock

b) granite rock

c) metamorphic rock

d) all of the above

7 / 50

7. *Galvanizing means

a) depositing a fine film of zinc on iron or steel by dipping in molten zinc

b) depositing a fine film of tin on iron or steel by dipping in molten tin

c) depositing a fine film of lead on iron or steel by dipping in molten iron

d) none of the above

8 / 50

8. *The stone that exhibits the highest compressive strength is

a) slate

b) gneiss

c) limestone

d) granite

9 / 50

9. The raw materials having more than 10% proportion in the manufacture of cement are

a) calcium oxide and silica

b) calcium oxide and magnesium oxide

c) magnesium oxide and ferrous oxide

d) silica and ferrous oxide

10 / 50

10. Identify the process responsible for the formation of igneous rocks

a) solidification of molten mass of silicates below or at the surface of earth

b) changes in texture or mineral composition or both of igneous and sedimentary rocks due to high temperature and heavy pressure

c) deposited layers of sand and silt subjected to enormous overburden pressures over geological times

d) none of the above

11 / 50

11. The defects in the growth of timber are called

a) shakes

b) checks

c) both (a) and (b) of above

d) none of the above

12 / 50

12. The seven-day compressive strength of good Portland cement, as obtained from the compressive test on cement-sand mortar cubes, should not be less than

a) 125 kg/cm^2

b) 150 kg/cm^2

c) 175 kg/cm^2

d) 200 kg/cm^2

13 / 50

13. *Quick lime is obtained from the burning of

a) kankar

b) limestone

c) slaked lime

d) white lime

14 / 50

14. Timber can be made reasonably fire-resistant

a) by soaking it in ammonium sulfate

b) by applying tar paint

c) by pumping creosote oil into timber under high pressure

d) none of the above

15 / 50

15. The discoloration and formation of white deposits due to the presence of a relatively large proportion of soluble salts in bricks is known as

a) bloating

b) chuffs

c) efflorescence

d) nodules

16 / 50

16. The quick lime as it comes from kilns is called

a) milk lime

b) hydraulic lime

c) lump lime

d) hydrated lime

17 / 50

17. *PVC stands for

a) plastic very compact

b) polythene vinyl carbon

c) pigment volume concentration

d) polythene vinyl chloride

18 / 50

18. Which one is correct?

a) quick lime slow in setting

b) quick lime rapid in slaking

c) quick lime generates heat on water addition

d) all of the above

19 / 50

19. Dolomite bricks are.

a) basic refractory bricks

b) acid refractory bricks

c) ordinary fire bricks

d) neutral refractory bricks

20 / 50

20. As per IS specification, the maximum final setting time for ordinary Portland cement

a) 30 minutes

b) 60 minutes

c) 10 hours

d) 24 hours

21 / 50

21. The amount of local brick required for one m3 masonry (As per NS norms) is

a) 500

b) 530

c) 560

d) 600

22 / 50

22. The types of bricks used for the lining of the furnace/combustion chamber are

a) refractory

b) machine made

c) handmade

d) 1st class

23 / 50

23. *Normally the bricks (1st class) obtained from pazawah is about

a) 30%

b) 40%

c) 50%

d) 60%

24 / 50

24. Slate and marble stone belong to

a) igneous rocks

b) metamorphic rock

c) sedimentary rock

d) foliated rocks

25 / 50

25. *Fire bricks should be laid in a

a) lime mortar

b) fire cement mortar

c) fire clay mortar

d) all of the above

26 / 50

26. The cracks in the painted surface extending throughout the thickness of the paint are caused due to

a) improper seasoning of the painted wood

b) excessive use of drier

c) too many coats of paint resulting in excessive thickness

d) all of the above

27 / 50

27. During the production of cement, raw materials are mixed in

a) ball mill

b) pug mill

c) rice mill

d) cement mill

28 / 50

28. Lacquer paints are

a) generally applied on structural steel

b) are more durable compared to enamel paints

c) consisting of resin and nitro-cellulose

d) all of the above

29 / 50

29. Which of the following is not a hardwood?

a) deodar

b) sal

c) teak

d) oak

30 / 50

30. To which category do the bauxite bricks belong?

a) neutral refractory brick

b) acid refractory brick

c) basic refractory brick

d) all of the above

31 / 50

31. *The pigment in paints gives

a) smoothness

b) durability

c) glossy face

d) color

32 / 50

32. Texture of sandstone is

a) cellular

b) foliated

c) granular

d) concoidal

33 / 50

33. *The main constituent of cement in descending order is

a) lime, silica, alumina, iron oxide, and magnesia

b) silica, alumina, iron oxide, magnesia, and lime

c) silica, alumina, iron oxide, and magnesia

d) alumina, lime, iron oxide, magnesia, and silica

34 / 50

34. The type of cement is considered good if

a) it contains C3S in large amounts

b) it contains C2S in large amounts

c) it contains C3A in large amounts

d) all of the above

35 / 50

35. Pick up the air-entraining agent from the following

a) animal fats

b) natural wood resins

c) alkali salts

d) all of the above

36 / 50

36. *The most durable varnish is:

a) water varnish

b) oil varnish

c) turpentine varnish

d) spirit varnish

37 / 50

37. *Bitumen is generally obtained from

a) organic material

b) petroleum product

c) synthetic material

d) coal

38 / 50

38. Loss on ignition in cement should not exceed

a) 1%

b) 4%

c) 8%

d) 12%

39 / 50

39. The constituent responsible for the strength in granite is

a) mica

b) felspar

c) quartz

d) all of the above

40 / 50

40. *The main constituent of varnish is

a) resin

b) water

c) chalk

d) all of the above

41 / 50

41. *The paints used in aircraft are

a) dry paints

b) cellulose paints

c) water paints

d) emulsion paints

42 / 50

42. For burning clay products such as sewer pipes, the necessary chemical change is

a) dehydration

b) oxidation

c) vitrification

d) none of the above

43 / 50

43. Which one of the following does not belong to endogenous trees?

a) palm

b) bamboo

c) teak

d) cane

44 / 50

44. *Bitumen is used for

a) waterproofing

b) damp proofing

c) joint filler

d) all of the above

45 / 50

45. The silicious and aluminous minerals themselves, which do not have cementitious qualities but which react with lime in the presence of water at normal temperature to form cementitious compounds, are known as

a) glazed materials

b) porcelains

c) pozzolanic materials

d) carbonaceous materials

46 / 50

46. The crushing strength of a stone depends upon its

a) texture

b) specific gravity

c) luster

d) both (a) and (b) of above

47 / 50

47. Lime suitable for making mortar of good strength

a) hydraulic lime

b) fat lime

c) lean lime

d) none of the above

48 / 50

48. *Turpentine oil is used in paints as a

a) base

b) thinner

c) drier

d) vehicle

49 / 50

49. A badly mixed cement concrete results in

a) segregation

b) bleeding

c) honeycombing

d) none of the above

50 / 50

50. Emulsion paints contain:

a) nitro cotton

b) zinc white

c) white lead

d) polyvinyl acetate

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Construction Materials Online Test – Paper 3

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