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 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

2 / 50

2. 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

3 / 50

3. Excess of silica in brick earth causes

a) loss of cohesion

b) impermeable

c) cracking and warping on drying

d) brittleness

4 / 50

4. The reason for the popularity of bricks as a construction material is that

a) they are cheap and available locally at all places

b) they are durable and possess fairly good strength and are lighter than stones

c) they have very good insulating property against heat and sound

d) all of the above

5 / 50

5. The defect caused by the shrinkage of timber is

a) crook

b) cup and bow

c) twist

d) all of the above

6 / 50

6. *A heavy stone is suitable for:

a) arches

b) rubble masonry

c) roads

d) retaining walls

7 / 50

7. *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

8 / 50

8. *Quartzite is a

a) sedimentary rock

b) metamorphic rock

c) organic rock

d) calcareous rock

9 / 50

9. Ultimate strength to cement is provided by:

a) Tricalcium silicate

b) Dicalcium silicate

c) Tricalcium aluminate

d) Tetra-calcium alumino ferrite

10 / 50

10. The soil used for the manufacture of bricks should preferably not contain the following material

a) alkalies

b) pebbles

c) manganese

d) iron oxide

11 / 50

11. The initial setting of cement is caused by the formation of

a) dicalcium silicate

b) tricalcium silicate

c) tricalcium aluminate

d) tetracalcium aluminate

12 / 50

12. Low porosity brick has

a) low strength

b) high strength

c) more absorption capacity

d) all of the above

13 / 50

13. Which of the following is the reason for the decrease in the use of stones as building material?

a) steel and R.C.C. are less bulky and more durable

b) strength of stones cannot be rationally analyzed

c) stones are not conveniently available in plains

d) all of the above

14 / 50

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

a) animal fats

b) natural wood resins

c) alkali salts

d) all of the above

15 / 50

15. French polish is made by dissolving the resin

a) in oil

b) in water

c) in spirit

d) in turpentine

16 / 50

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

a) 30%

b) 40%

c) 50%

d) 60%

17 / 50

17. The base in a paint has the following function

a) it forms the body of the paint

b) it reduces the shrinkage cracks

c) it reinforces the films of the paint after it has dried and prevents the penetration of paint to lower surfaces

d) all of the above

18 / 50

18. The calcination of pure lime results in

a) quick lime

b) hydrated lime

c) slaked lime

d) fat lime

19 / 50

19. Refractory bricks are

a) neutral refractory brick

b) acid refractory brick

c) basic refractory brick

d) all of the above

20 / 50

20. *Soundness test of cement determines

a) quantity of free lime

b) ultimate strength

c) durability

d) initial setting

21 / 50

21. *The sports goods are made from

a) sal

b) deodar

c) chir

d) mulberry

22 / 50

22. *Impregnating of timber is done to increase

a) fire resistance of timber

b) seasoning of timber

c) weight of timber

d) none of the above

23 / 50

23. The rock having a tendency to split in a definite direction is called

a) stratified

b) unstratified

c) foliated

d) all of the above

24 / 50

24. PVC controls in paint

a) gloss

b) cohesion & adhesion

c) durability & washability

d) all of the above

25 / 50

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

a) lime

b) silica

c) manganese

d) iron oxide

26 / 50

26. *Lime concrete is used in

a) foundation of columns

b) roof slabs

c) walls

d) under the floors

27 / 50

27. Laterite is an example of

a) agrillaceous rock

b) volcanic rock

c) organic rock

d) siliceous rock

28 / 50

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

a) clay

b) granita

c) quartz

d) lime stone

29 / 50

29. *In the sieve analysis of the fineness test, the residue on IS sieve No. 90╬╝ after 15 minutes of sieving should not be more than

a) 5%

b) 7.50%

c) 10%

d) 15%

30 / 50

30. Slate and marble stone belong to

a) igneous rocks

b) metamorphic rock

c) sedimentary rock

d) foliated rocks

31 / 50

31. *The commonly used drying oil for oil paints is

a) olive oil

b) linseed oil

c) kerosene

d) acetate of lead

32 / 50

32. The following element of a paint is used as base, pigment as well as drier

a) red lead

b) white lead

c) black lead

d) all of the above

33 / 50

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

a) ball mill

b) pug mill

c) rice mill

d) cement mill

34 / 50

34. Limestone comes under the category of

a) aqueous rock

b) stratified rock

c) sedimentary rock

d) all of the above

35 / 50

35. Tripoli is a type of

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) none of the above

36 / 50

36. In the case of a clamp for the burning of bricks, the bricks/fuel are laid at a slope of...

a) 10┬░

b) 15┬░

c) 20┬░

d) 25┬░

37 / 50

37. *The timber whose thickness is less than 5 cm and width exceeds 12 cm is called a

a) board

b) plank

c) batten

d) log

38 / 50

38. *Turpentine oil is used in paints as a

a) base

b) thinner

c) drier

d) vehicle

39 / 50

39. *Stainless steel resists corrosion due to

a) carbon

b) sulfur

c) nickel

d) chromium

40 / 50

40. The constituent responsible for the strength in granite is

a) mica

b) felspar

c) quartz

d) all of the above

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. When a bitumen is graded by 75/15, the figure 75 represents

a) viscosity in centipoises

b) softening point in ┬░C

c) fire point in ┬░C

d) flash point in ┬░C

43 / 50

43. The standard size of a brick as per Nepal Standard (NBC205:2013) is

a) 20x 10x10 cm^3

b) 230x115x57 mm^3

c) 18x9x9 cm^3

d) 18x8x8 cm^3

44 / 50

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

a) faster

b) slower

c) same rate

d) very slowly

45 / 50

45. Jhamb bricks

a) over burnt

b) under burnt

c) kuccha

d) none of the above

46 / 50

46. The rock having calcium carbonate as the main mineral constituent is known as

a) calcareous rocks

b) argillaceous rocks

c) siliceous rocks

d) sandy rocks

47 / 50

47. *Frog means

a) depression on top face of brick

b) special types of brick

c) projection of brick

d) all of the above

48 / 50

48. *The painting work is generally specified by

a) weight of the paint applied

b) labor used in the painting

c) area of the painted surface

d) all of the above

49 / 50

49. *The defects in wood due to hardening is

a) knots

b) rind galls

c) burls

d) none of the above

50 / 50

50. Which one of the following does not show good cleavage?

a) calcite

b) mica

c) feldspar

d) silica

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Construction Materials Online Test – Paper 3

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