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. *Finely powdered burnt clay is called:

a) fly ash

b) surkhi

c) bricquette

d) moraine

2 / 50

2. *Flash setting of cement means

a) hydration of cement

b) hardening of cement

c) stiffening of cement without strength development

d) all of the above

3 / 50

3. 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

4 / 50

4. The physical classification divides the rocks into

a) calcareous, argillaceous, and silicious

b) organic, semi-organic, and inorganic

c) igneous, sedimentary, and metamorphic

d) stratified, unstratified, and foliated

5 / 50

5. *Anti-corrosive paint is ...........in color:

a) black

b) blue

c) white

d) yellow

6 / 50

6. *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

7 / 50

7. The minimum hardness number for marble is about

a) 3

b) 8

c) 5

d) 10

8 / 50

8. *Which of the following is a good fire resistance material?

a) clay

b) granita

c) quartz

d) lime stone

9 / 50

9. Jhamb bricks

a) over burnt

b) under burnt

c) kuccha

d) none of the above

10 / 50

10. *The size of bull's trench kiln is

a) circular

b) parabolic

c) elliptical

d) all of the above

11 / 50

11. The unit weight of sal is

a) 600 kg/m^3

b) 700 kg/m^3

c) 800 kg/m^3

d) 900 kg/m^3

12 / 50

12. In quick-setting cement the compound added is

a) aluminium sulphate

b) aluminium silicate

c) calcium sulphate

d) gypsum

13 / 50

13. *Types of rock used for lightweight aggregate is

a) shale

b) pumice

c) conglomerate

d) slate

14 / 50

14. The argillaceous rocks have their principal constituents as

a) lime

b) clay

c) sand

d) none of the above

15 / 50

15. *Strike is used to remove the

a) crowded people

b) stop the work

c) surplus clay of the mould

d) all of the above

16 / 50

16. *The hardest rock is:

a) marble

b) talc

c) diamond

d) quartz

17 / 50

17. *The commonly used grade of bitumen that is used in the moderate temperature range of Nepal is:

a) 60/100

b) 70/100

c) 80/100

d) 90/100

18 / 50

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

a) zinc oxide

b) red lead

c) white lead

d) iron oxide

19 / 50

19. During compressive strength load is applied at the rate of

a) 10 N/mm^2/Min

b) 12 N/mm^2/Min

c) 14 N/mm^2/Min

d) 16 N/mm^2/Min

20 / 50

20. 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

21 / 50

21. *Hollow bricks are used for

a) ornamental designs

b) thermal insulation

c) reduction in cost

d) earthquake resistant building

22 / 50

22. Fracture of asbestos is

a) regular

b) irregular

c) fibrous

d) concoidal

23 / 50

23. 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

24 / 50

24. *Pug mill is used for

a) clay preparation

b) clay moulding

c) brick drying

d) brick burning

25 / 50

25. *The varnish is essentially made of

a) resin

b) solvent

c) drier

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

26 / 50

26. The vehicle used in the case of enamel paints is

a) varnish

b) linseed oil

c) water

d) all of the above

27 / 50

27. Attrition test on stone is done to find out

a) rate of wear

b) toughness

c) compressive strength

d) hardness

28 / 50

28. *The main constituent, which is mainly responsible for hydraulicity is

a) water

b) clay

c) silica

d) carbon dioxide

29 / 50

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

a) silica

b) clay

c) calcium oxide

d) carbon dioxide

30 / 50

30. *The commonly used raw material in the manufacture of cement is

a) slate

b) sandstone

c) limestone

d) basalt

31 / 50

31. *Slate stone is a

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) granular rock

32 / 50

32. The main component of oil paint is

a) carrier

b) thinner

c) pigment

d) all of the above

33 / 50

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

a) plank

b) log

c) bauk

d) strip

34 / 50

34. Brard's test is done for finding the... of stone

a) frost resistance

b) dirty matter

c) weather resistance

d) all of the above

35 / 50

35. The calcination of pure lime results in

a) quick lime

b) hydrated lime

c) slaked lime

d) fat lime

36 / 50

36. The explosive not used for blasting the rocks underwater is

a) gun powder

b) gun cotton

c) dynamite

d) cordite

37 / 50

37. A pug mill is used for

a) softening brick earth

b) moulding brick earth

c) tempering brick earth

d) all of the above

38 / 50

38. The process of kneading clay, water, and other ingredients to make a brick is called

a) moulding

b) tempering

c) pugging

d) blending

39 / 50

39. Sandstone contains mostly

a) quartz and lime

b) quartz, lime, and silica

c) silica, aluminium, and lime

d) igneous

40 / 50

40. The dry process of manufacturing cement has become obsolete because, in comparison to the wet process

a) it is slow and costly

b) the quality of cement produced by it is inferior

c) it is difficult to maintain the correct proportions of constituents

d) all of the above

41 / 50

41. Lime suitable for making mortar of good strength

a) hydraulic lime

b) fat lime

c) lean lime

d) none of the above

42 / 50

42. *Seasoning of timber is done for

a) increasing moisture content

b) decreasing moisture content

c) increasing the strength of timber

d) none of the above

43 / 50

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

a) circular

b) rectangular

c) pentagonal

d) elliptical

44 / 50

44. Normally, the wood used for scaffolding is

a) mango

b) bamboo

c) shisham

d) sal

45 / 50

45. Good quality building stones should not contain soluble salts more than

a) 0%

b) 1%

c) 2%

d) 20%

46 / 50

46. Dormant period (2-5hr) is concerned with

a) hydration of cement

b) fineness of cement

c) soundness of cement

d) workability of cement

47 / 50

47. The strength of cement is reduced by.......after 6 months

a) 20%

b) 30%

c) 40%

d) 50%

48 / 50

48. *Seasoning of timber is essential to remove

a) knots

b) sap from timber

c) twisted fiber from timber

d) roughness of timber

49 / 50

49. Plastic asphalt is

a) a mixture of cement and asphalt

b) a natural asphalt

c) a refinery product

d) none of the above

50 / 50

50. Material generally not used as an extender in paints is

a) powdered silica

b) gypsums

c) talc

d) zinc white

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Construction Materials Online Test – Paper 3

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