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 slow-setting cement has a higher percentage of

a) tricalcium aluminate

b) tricalcium silicate

c) dicalcium silicate

d) gypsum

2 / 50

2. *The best primer used for structural steel work is

a) zinc oxide

b) red lead

c) white lead

d) iron oxide

3 / 50

3. The compressive strength of stone is found out by

a) attrition test

b) crushing test

c) hardness test

d) impact test

4 / 50

4. Identify the process responsible for the formation of metamorphic 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

5 / 50

5. The nominal size of modular brick is

a) greater than actual brick

b) none of the above

c) less than actual brick

d) equal to actual brick

6 / 50

6. In the briquette test, the seven-day tensile strength of good Portland cement should not be less than

a) 20 kg/cm^2

b) 30 kg/cm^2

c) 25 kg/cm^2

d) 35 kg/cm^2

7 / 50

7. As compared to fat lime, the hydraulic lime sets

a) faster

b) slower

c) same rate

d) very slowly

8 / 50

8. 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

9 / 50

9. *Bitumen is generally obtained from

a) organic material

b) petroleum product

c) synthetic material

d) coal

10 / 50

10. Which of the following has the lowest crushing strength

a) basalt

b) granite

c) diorite

d) laterite

11 / 50

11. The constituent responsible for setting of hydraulic lime underwater is

a) silica

b) clay

c) calcium oxide

d) carbon dioxide

12 / 50

12. Identify the geological classification of rocks

a) calcareous, argillaceous, and silicious

b) organic, semi-organic, and inorganic

c) igneous, sedimentary, and metamorphic

d) stratified, unstratified, and foliated

13 / 50

13. The initial and final setting times of ordinary Portland cement are

a) 30 minutes and 10 hr

b) 15 minutes and 10 hr

c) 15 minutes and 5 hr

d) none of the above

14 / 50

14. *Gravel is a type of

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) none of the above

15 / 50

15. Lime having high calcium oxide content, which can set and become hard only in the presence of CO2 from the atmosphere, is known as

a) hydraulic lime

b) fat lime

c) quick lime

d) lump lime

16 / 50

16. 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

17 / 50

17. The main function of alumina in brick earth is

a) to impart plasticity

b) to increase durability

c) to prevent shrinkage

d) to increase impermeability

18 / 50

18. Inert filler/adulterant is used in paint to

a) increase the volume

b) reduce the cost

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

d) none of the above

19 / 50

19. *Brass is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) copper and chromium

20 / 50

20. The rocks which are formed due to the cooling of magma at a considerable depth from the earth's surface are called

a) Hypabyssal rocks

b) Volcanic rocks

c) Plutonic rocks

d) Igneous rocks

21 / 50

21. A prime coat is given to steelwork

a) an oxide of iron paint

b) a mixture of linseed oil & red lead

c) an oxide of paint

d) all of the above

22 / 50

22. The layer between the bark of the tree and the sapwood, which is not yet converted into wood is called

a) heartwood

b) cambium layer

c) softwood layer

d) pith

23 / 50

23. The solidification of molten magma within the earth's crust results in the formation of

a) sedimentary rocks

b) metamorphic rocks

c) basalts and traps

d) granite and pegmatite

24 / 50

24. In arches, stratified stones are placed so that their planes are

a) parallel

b) radial

c) perpendicular

d) all of the above

25 / 50

25. *Slate stone is a

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) granular rock

26 / 50

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

a) 30%

b) 40%

c) 50%

d) 60%

27 / 50

27. Bull nose bricks are not used in

a) walls

b) rounding off sharp corners

c) arches

d) pillars

28 / 50

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

a) palm

b) bamboo

c) teak

d) cane

29 / 50

29. *A thin sheet of wood sliced from a log of wood is called

a) plywood

b) laminated board

c) veneer

d) none of the above

30 / 50

30. Rapid hardening cement attains early strength due to

a) a larger proportion of lime grounded finer than in ordinary cement

b) a small proportion of lime grounded finer than in ordinary cement

c) the presence of an excess percentage of gypsum

d) none of the above

31 / 50

31. *Quick lime is

a) calcium oxide

b) calcium hydroxide

c) calcium carbonate

d) none of the above

32 / 50

32. Stone generally used for railway ballast is

a) sandstone

b) dolomite

c) marble

d) basalt or trap, granite

33 / 50

33. *Le-Chatelier's apparatus is used to carry out

a) consistency test

b) soundness test

c) compressive strength

d) tensile strength

34 / 50

34. The crushing strength of 1st class brick should not be less than

a) 25 kg/cm^2

b) 70 kg/cm^2

c) 105 kg/cm^2

d) 140 kg/cm^2

35 / 50

35. The most commonly used retarder in cement is:

a) gypsum

b) calcium chloride

c) calcium carbonate

d) none of the above

36 / 50

36. *Water absorption of cement should not be more than

a) 5%

b) 10%

c) 15%

d) 20%

37 / 50

37. *Which one of the following pairs is correctly matched?

a) sandstone......igneous rock

b) lime stone.....sedimentary rock

c) basalt...........metamorphic rock

d) granite...........argillaceous rock

38 / 50

38. *Seasoning of timber is essential to remove

a) knots

b) sap from timber

c) twisted fiber from timber

d) roughness of timber

39 / 50

39. Portland cement manufactured from pure white chalk and clay but free from iron oxide is known as

a) low heat Portland cement

b) quick setting cement

c) white cement

d) none of the above

40 / 50

40. The tool used for quarrying of stones is

a) dipper

b) spalling hammer

c) jumper

d) priming needle

41 / 50

41. *Seasoning of timber is done to

a) reduce the weight of timber

b) reduce the chances of shrinkage

c) increase the strength and durability

d) all of the above

42 / 50

42. The strength of RHPC for one day is equal to...day of OPC

a) 2 days

b) 3 days

c) 4 days

d) 5 days

43 / 50

43. *The shape of Hoffman's continuous kiln is

a) circular

b) rectangular

c) pentagonal

d) elliptical

44 / 50

44. *If the molten magma forces itself into an already existing rock in the earth's crust and solidifies there, such a rock is known as

a) metamorphic rock

b) extrusive rock

c) intrusive rock

d) igneous rock

45 / 50

45. The solvent used in cement paints is

a) turpentine

b) water

c) spirit

d) kerosene

46 / 50

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

a) animal fats

b) natural wood resins

c) alkali salts

d) all of the above

47 / 50

47. *Turpentine oil is used in paints as a

a) base

b) thinner

c) drier

d) vehicle

48 / 50

48. *A piece of timber whose thickness and width are respectively 5 cm and 10 cm is called

a) cant

b) deal

c) bauk

d) strip

49 / 50

49. The most economical methods of sawing wood is

a) radial sawing

b) tangential sawing

c) quarter sawing

d) flat sawing

50 / 50

50. The percentage of alumina in good brick earth lies between

a) 10-20%

b) 20-30%

c) 30-40%

d) 40-50%

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Construction Materials Online Test – Paper 3

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