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 red color obtained by the bricks is due to the presence of

a) lime

b) silica

c) manganese

d) iron oxide

2 / 50

2. Jhamb bricks

a) over burnt

b) under burnt

c) kuccha

d) none of the above

3 / 50

3. Crushing strength for most of the building stones should be more than

a) 500 kg/cm^2

b) 1000 kg/cm^2

c) 1500 kg/cm^2

d) 2000 kg/cm^2

4 / 50

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

a) coloring agent

b) bleeding agent

c) waterproofer

d) air-entraining agent

5 / 50

5. *Tampering of soil for the manufacture of bricks is done by

a) feet

b) pug mill

c) feet of cattle

d) all of the above

6 / 50

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

a) 25%

b) 50%

c) 75%

d) 100%

7 / 50

7. Refractory bricks are specially manufactured

a) to withstand high crushing pressure

b) to withstand high temperature

c) to have high insulation against sound

d) none of the above

8 / 50

8. The solution of salts from the soil absorbed by the trees, which becomes a viscous solution due to the loss of moisture and action of carbon dioxide is known as

a) pith

b) cambium

c) bark

d) sap

9 / 50

9. The artificial seasoning of timber may

a) reduce moisture

b) make light and strong

c) make fire resistance

d) remove moisture

10 / 50

10. 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

11 / 50

11. *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

12 / 50

12. Sandstone contains mostly

a) quartz and lime

b) quartz, lime, and silica

c) silica, aluminium, and lime

d) igneous

13 / 50

13. *The function of paint is

a) to give a clean, colorful, and pleasing surface

b) to increase the life of the painted surface

c) to protect the surface from corrosion and other weather effects

d) all of the above

14 / 50

14. *The cement becomes useless if its absorbed moisture content exceeds?

a) 5%

b) 4%

c) 3%

d) 2%

15 / 50

15. *What is the essential constituent of varnish paint?

a) linseed oil

b) resin

c) zinc sulfate

d) soda

16 / 50

16. If P is the percentage of water required for normal consistency, water to be added for determination of the initial setting time is,

a) 0.70P

b) 0.75P

c) 0.80P

d) 0.85P

17 / 50

17. *A brick is a block of ........

a) dusty material

b) organic material

c) ceramic material

d) loamy material

18 / 50

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

a) calcite

b) mica

c) feldspar

d) silica

19 / 50

19. The constituents of cement, which act as a binder are

a) dicalcium silicate and tricalcium silicate

b) tricalcium aluminate, tricalcium silicate, and carbon

c) silica and carbon

d) none of the above

20 / 50

20. *Quick lime is obtained from the burning of

a) kankar

b) limestone

c) slaked lime

d) white lime

21 / 50

21. *The lime suitable for making mortar is

a) quick lime

b) fat lime

c) hydraulic lime

d) pure lime

22 / 50

22. *Bitumen is generally obtained from

a) organic material

b) petroleum product

c) synthetic material

d) coal

23 / 50

23. Bloating of bricks is due to

a) presence of excess carbonaceous matter and sulphur

b) presence of any gas forming material in clay

c) bad burning or rapid firing

d) all of the above

24 / 50

24. The argillaceous rocks have their principal constituents as

a) lime

b) clay

c) sand

d) none of the above

25 / 50

25. If fine sand or ash is sprinkled on the inner surface of the mould, the bricks are known as

a) slope moulded

b) sand moulded

c) table moulded

d) machine moulded

26 / 50

26. *Efflorescence in brick is caused due to an excess of:

a) alumina

b) iron oxide

c) silica

d) alkalis

27 / 50

27. A slow-setting cement has a higher percentage of

a) tricalcium aluminate

b) tricalcium silicate

c) dicalcium silicate

d) gypsum

28 / 50

28. 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

29 / 50

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

a) water

b) clay

c) silica

d) carbon dioxide

30 / 50

30. The fire clay contains pure

a) Lime

b) oxide of iron

c) hydrated aluminium silicate

d) mangesium

31 / 50

31. *The function of frog is

a) to form a key during laying

b) reduction in weight

c) advertisement of the manufacturer

d) all of the above

32 / 50

32. *The commonly used thinner in oil paints is

a) naptha

b) turpentine

c) olive oil

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

33 / 50

33. Find the one which is not used in quarrying

a) gun powder

b) gun cotton

c) marble powder

d) dynamite

34 / 50

34. Which of the following statements is not correct?

a) kiln-seasoned timber is stronger than naturally seasoned timber

b) moisture content in the timber can be reduced to any desired level in kiln seasoning

c) kiln seasoning is quicker than natural seasoning

d) kiln seasoning requires less stacking space but more expensive than natural seasoning

35 / 50

35. 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

36 / 50

36. Bitumen paint renders

a) a protective surface

b) a shining surface

c) a smooth surface

d) a hard surface

37 / 50

37. Attrition test on stone is done to find out

a) rate of wear

b) toughness

c) compressive strength

d) hardness

38 / 50

38. The amount of insoluble residue & residual retained (OPC) on IS90 sieve

a) 1.5% & 10%

b) 4% & 10%

c) 10% & 1.5%

d) 1.5% & 4%

39 / 50

39. The consistency test is performed to find

a) the correct water-cement ratio

b) the fineness of cement

c) the compressive strength

d) tensile strength

40 / 50

40. *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

41 / 50

41. Kaolin (china clay) is a

a) calcareous rocks

b) argillaceous rocks

c) siliceous rocks

d) sandy rocks

42 / 50

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

a) zinc oxide

b) red lead

c) white lead

d) iron oxide

43 / 50

43. *Stainless steel metal is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) nickel and chromium

44 / 50

44. *A good quality stone must absorb water less than

a) 2.50%

b) 5%

c) 10%

d) 20%

45 / 50

45. *Porcelain is used as

a) storage vessels

b) hard wares

c) sanitary wares

d) soft wares

46 / 50

46. The maximum percentage of warping along the sides of tiles is

a) 2%

b) 5%

c) 8%

d) 1.10%

47 / 50

47. Which category does the sandstone belong to?

a) igneous rocks

b) metamorphic rock

c) sedimentary rock

d) foliated rocks

48 / 50

48. Rocks having silica as the main constituent are called

a) calcareous rocks

b) argillaceous rocks

c) siliceous rocks

d) none of the above

49 / 50

49. *In low heat cement, the constituent kept to the minimum is

a) dicalcium silicate

b) tricalcium silicate

c) tricalcium aluminate

d) tetracalcium aluminate

50 / 50

50. Texture of sandstone is

a) cellular

b) foliated

c) granular

d) concoidal

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Construction Materials Online Test – Paper 3

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