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. The initial and final setting times of quick setting cement are

a) 15 minutes and 45 minutes

b) 20 minutes and one hour

c) 5 minutes and 30 minutes

d) 5 minutes and 10 minutes

2 / 50

2. *The seasoning of timber is done for

a) bark drying

b) pith drying

c) hot drying

d) humidity drying

3 / 50

3. Bitumen paint renders

a) a protective surface

b) a shining surface

c) a smooth surface

d) a hard surface

4 / 50

4. *Extenders used in paints are for

a) smooth surface

b) easy spreading

c) coloring

d) glossy face

5 / 50

5. *The pigment in paints gives

a) smoothness

b) durability

c) glossy face

d) color

6 / 50

6. *Distemper is used on

a) roof top

b) plastered surface exposed to weather

c) plastered surface not exposed to weather

d) unplastered surface exposed as well as not exposed to weather

7 / 50

7. French polish is made by dissolving the resin

a) in oil

b) in water

c) in spirit

d) in turpentine

8 / 50

8. *In one day, the height of brick masonry construction should generally not exceed

a) 1m

b) 1.5m

c) 2.5m

d) 3m

9 / 50

9. *Gravel is a type of

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) none of the above

10 / 50

10. *Soundness test of cement determines

a) quantity of free lime

b) ultimate strength

c) durability

d) initial setting

11 / 50

11. *The red color obtained by the bricks is due to the presence of

a) lime

b) silica

c) manganese

d) iron oxide

12 / 50

12. *In paints, the pigment is responsible for:

a) durability

b) smoothness

c) color

d) gray face

13 / 50

13. Ultimate strength to cement is provided by:

a) Tricalcium silicate

b) Dicalcium silicate

c) Tricalcium aluminate

d) Tetra-calcium alumino ferrite

14 / 50

14. Kaolin (china clay) is a

a) calcareous rocks

b) argillaceous rocks

c) siliceous rocks

d) sandy rocks

15 / 50

15. *Softening point test (x/y) for bitumen is done at a temperature of upper numeral indicates the softening temperature (x┬░C) while the lower numeral indicates

a) viscosity

b) softening point

c) penetration

d) flash point

16 / 50

16. The crushing strength of a stone depends upon its

a) texture

b) specific gravity

c) luster

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

17 / 50

17. Basalt (TBE-GPI) is a

a) extrusive igneous rock

b) intrusive igneous rock

c) sedimentary rock

d) metamorphic rock

18 / 50

18. Marble contains only

a) lime

b) silica

c) lime and silica

d) none of the above

19 / 50

19. *Lime is obtained from

a) lime stone

b) sand stone

c) trap

d) silica

20 / 50

20. The small areas on the painted surface enclosed by hairline cracks are called

a) crazing

b) crocodiling

c) chalking

d) blistering

21 / 50

21. *Bronze is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) copper and chromium

22 / 50

22. 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

23 / 50

23. *Asphalt is a mixture of

a) bitumen and inert mineral matter

b) bitumen and asbestos

c) bitumen and cement

d) tar and asbestos

24 / 50

24. *The process of heating the limestone to redness in contact with air is termed

a) carbonation

b) oxidation

c) hydration

d) calcination

25 / 50

25. For normal consistency, the penetration in Vicat apparatus should be between

a) 35 to 38 mm

b) >40 mm

c) 20 to 30mm

d) 30 to 35mm

26 / 50

26. A piece of sawn timber whose cross-sectional dimensions exceed 5 cm in one direction and 20 cm in the other direction is called a

a) cant

b) deal

c) bauk

d) strip

27 / 50

27. 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

28 / 50

28. The timber having maximum resistance against white rots is obtained from

a) chir

b) shisham

c) sal

d) teak

29 / 50

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

a) 10-20%

b) 20-30%

c) 30-40%

d) 40-50%

30 / 50

30. *The hardest rock is:

a) marble

b) talc

c) diamond

d) quartz

31 / 50

31. *Quick lime is obtained from the burning of

a) kankar

b) limestone

c) slaked lime

d) white lime

32 / 50

32. *Sandstone is a

a) sedimentary rock

b) igneous rock

c) argillaceous

d) both (a) and (b) above

33 / 50

33. The most widely used kiln in Nepal is

a) hoffman's kiln

b) bull's trench kiln

c) clamp kiln

d) none of the above

34 / 50

34. The constituent responsible for the strength in granite is

a) mica

b) felspar

c) quartz

d) all of the above

35 / 50

35. Stucco paints are suitable for

a) stone masonry

b) brick walls

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

d) none of the above

36 / 50

36. 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

37 / 50

37. 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

38 / 50

38. Which one is correct?

a) normally concreting is done above 20┬░C

b) the optimum temperature for concreting is 27┬░┬▒2┬░

c) consistency test is done at a temperature of 25┬░C to 29┬░C

d) all of the above

39 / 50

39. The bricks are properly soaked in water before use for the following reason

a) to wash the kiln dust for better bondage with mortar

b) to avoid the chances of absorption of water from the mortar

c) to spread the mortar uniformly between them

d) all of the above

40 / 50

40. To which category do the chromite bricks belong?

a) neutral refractory brick

b) acid refractory brick

c) basic refractory brick

d) all of the above

41 / 50

41. Suitable stone for a gravity retaining wall is

a) light

b) heavy

c) hard

d) soft

42 / 50

42. *The internal size of the mould used in brick preparation is

a) smaller than the size of fully burnt brick

b) larger than the size of fully burnt brick

c) equal to the size of fully burnt brick

d) none of the above

43 / 50

43. PVC controls in paint

a) gloss

b) cohesion & adhesion

c) durability & washability

d) all of the above

44 / 50

44. The fineness of cement is tested by:

a) air permeability method

b) le-chatlier method

c) vicat's apparatus

d) all of the above

45 / 50

45. Which of the following is a mineral?

a) quartzite

b) laterite

c) calcareous rock

d) calcite

46 / 50

46. *The strength of timber is maximum along

a) parallel to the grain

b) perpendicular to the grain

c) 45┬░ to the grain

d) the same in all directions

47 / 50

47. *The ingredient which gives the desired color to a paint is called

a) base

b) pigment

c) vehicle

d) solvent

48 / 50

48. *The over ground continuous kiln is

a) bull's trench kiln

b) hoffman's kiln

c) tunnel kiln

d) all of the above

49 / 50

49. Creosote oil is used to preserve the wood from

a) rot and white ant

b) fire hazards

c) cracking

d) none of the above

50 / 50

50. Based on its dry weight, a freshly felled tree may contain water

a) 25%

b) 50%

c) 75%

d) 100%

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Construction Materials Online Test – Paper 3

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