Construction Materials Online Test – Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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1 / 30

1. 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

2 / 30

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

a) tricalcium aluminate

b) tricalcium silicate

c) dicalcium silicate

d) gypsum

3 / 30

3. *Softest rock is

a) marble

b) talc

c) diamond

d) none of the above

4 / 30

4. Distemper is generally used in:

a) walls

b) wood

c) steel

d) none of the above

5 / 30

5. *Workability of concrete is increased due to an excess of

a) cement

b) water

c) round aggregate

d) all of the above

6 / 30

6. *The lime suitable for making mortar is

a) quick lime

b) fat lime

c) hydraulic lime

d) pure lime

7 / 30

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

a) moulding

b) tempering

c) pugging

d) blending

8 / 30

8. The soil good for making bricks is

a) clay soil (silica & alumina)

b) alluvial

c) silt

d) sand and silt

9 / 30

9. The commonly used thinner in distempers

a) olive oil

b) naptha

c) turpentine

d) water

10 / 30

10. Refractory bricks are

a) neutral refractory brick

b) acid refractory brick

c) basic refractory brick

d) all of the above

11 / 30

11. *The most durable varnish is:

a) water varnish

b) oil varnish

c) turpentine varnish

d) spirit varnish

12 / 30

12. Fracture of asbestos is

a) regular

b) irregular

c) fibrous

d) concoidal

13 / 30

13. *Lime is obtained from

a) lime stone

b) sand stone

c) trap

d) silica

14 / 30

14. The tool used for quarrying of stones is

a) dipper

b) spalling hammer

c) jumper

d) priming needle

15 / 30

15. Sandstone contains mostly

a) quartz and lime

b) quartz, lime, and silica

c) silica, aluminium, and lime

d) igneous

16 / 30

16. The maximum percentage of clay content for making good tiles is about

a) 20%

b) 30%

c) 40%

d) 50%

17 / 30

17. Generally, wooden molds are made from

a) ply wood

b) shisham

c) pine wood

d) teak wood

18 / 30

18. *The varnish is essentially made of

a) resin

b) solvent

c) drier

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

19 / 30

19. Monel metal is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) copper and chromium

20 / 30

20. The defect caused by the shrinkage of timber is

a) crook

b) cup and bow

c) twist

d) all of the above

21 / 30

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

a) clay

b) granita

c) quartz

d) lime stone

22 / 30

22. Mica, mainly, is composed of

a) calcium carbonate

b) magnesium and calcium silicate

c) silica with oxygen

d) potassium and aluminium silicate

23 / 30

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

a) zinc oxide

b) red lead

c) white lead

d) iron oxide

24 / 30

24. *The most commonly used accelerator for concreting is

a) gypsum

b) calcium chloride

c) calcium oxide

d) calcium sulphate

25 / 30

25. 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

26 / 30

26. Gypsum is added to cement for reducing the fast reacting property of

a) dicalcium silicate

b) tricalcium silicate

c) tricalcium aluminate

d) tetra calcium alumino ferrite

27 / 30

27. The main constituents of Portland cement are:

a) lime, silica, and alumina

b) lime, alumina, and potash

c) alumina, silica, and iron oxide

d) lime, alumina, and iron oxide

28 / 30

28. 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

29 / 30

29. Dolomite bricks are.

a) basic refractory bricks

b) acid refractory bricks

c) ordinary fire bricks

d) neutral refractory bricks

30 / 30

30. The maximum percentage of silt content for making good tiles is about

a) 20%

b) 30%

c) 40%

d) 50%

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Construction Materials Online Test – Paper 2

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