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%
Randomization: Yes
Certificate: No
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1 / 30

1. The maximum percentage of fine sand content in the soil for making good tiles is about

a) 20%

b) 30%

c) 40%

d) 50%

2 / 30

2. *Bronze is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) copper and chromium

3 / 30

3. The maximum percentage of water absorption of 1st class bricks in 24 hrs should be limited to

a) 10%

b) 15%

c) 20%

d) 24%

4 / 30

4. *The main constituent of varnish is

a) resin

b) water

c) chalk

d) all of the above

5 / 30

5. Identify the process responsible for the formation of sedimentary 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

6 / 30

6. Trap is a

a) metamorphic rock

b) igneous rock

c) granite rock

d) sedimentary rock

7 / 30

7. *The pigment in paints gives

a) smoothness

b) durability

c) glossy face

d) color

8 / 30

8. The layer between the bark of the tree and the sapwood, which is not yet converted into wood is called

a) heartwood

b) cambium layer

c) softwood layer

d) pith

9 / 30

9. *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

10 / 30

10. 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

11 / 30

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

a) linseed oil

b) resin

c) zinc sulfate

d) soda

12 / 30

12. Veneering means

a) carving out designs on timber planks

b) chemically treating timber planks

c) thick layer of superior wood glued to inferior wood

d) thin layer of superior wood glued to inferior wood.

13 / 30

13. Which one of the following does not belong to exogenous trees?

a) coconut

b) teak

c) shisham

d) sal

14 / 30

14. The trees yielding hard wood is

a) shisham

b) chir

c) deodar

d) pine

15 / 30

15. *Le-Chatelier's apparatus is used to carry out

a) consistency test

b) soundness test

c) compressive strength

d) tensile strength

16 / 30

16. *The weight loss on heating of bitumen used for pavement should not be more than

a) 1%

b) 3%

c) 4%

d) 5%

17 / 30

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

a) animal fats

b) natural wood resins

c) alkali salts

d) all of the above

18 / 30

18. Low porosity brick has

a) low strength

b) high strength

c) more absorption capacity

d) all of the above

19 / 30

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

a) frost resistance

b) dirty matter

c) weather resistance

d) all of the above

20 / 30

20. 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

21 / 30

21. *The percentage of carbon in cast iron is:

a) 0.70%

b) 1.2 to 1.7%

c) 1.20%

d) 2 to 4.5%

22 / 30

22. 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

23 / 30

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

a) silica

b) clay

c) calcium oxide

d) carbon dioxide

24 / 30

24. The paints with white lead base are suitable for the painting of

a) ironwork

b) woodwork

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

d) none of the above

25 / 30

25. *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

26 / 30

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

a) 0%

b) 1%

c) 2%

d) 20%

27 / 30

27. *Which constituent is the best cementing material in cement?

a) tri-calcium silicate

b) tri-calcium aluminate

c) di-calcium silicate

d) free lime

28 / 30

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

a) slate

b) sandstone

c) limestone

d) basalt

29 / 30

29. *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

30 / 30

30. *Brass is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) copper and chromium

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Construction Materials Online Test – Paper 2

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