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

a) ball mill

b) pug mill

c) rice mill

d) cement mill

2 / 30

2. French polish is made by dissolving the resin

a) in oil

b) in water

c) in spirit

d) in turpentine

3 / 30

3. The timber used for decorative woodwork

a) shisham

b) siris wood

c) rosewood

d) all of the above

4 / 30

4. 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

5 / 30

5. 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

6 / 30

6. *Quick lime is

a) calcium oxide

b) calcium hydroxide

c) calcium carbonate

d) none of the above

7 / 30

7. The insoluble residues in good cement should be

a) between 4 and 8%

b) less than 8%

c) between 8 and 10%

d) less than 1.5%

8 / 30

8. *Rubberization temperature is

a) 180┬░C

b) 150┬░C

c) 220┬░C

d) 250┬░C

9 / 30

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

a) 30%

b) 40%

c) 50%

d) 60%

10 / 30

10. For one cubic meter of brick masonry, the number of machine-made brick required as per NS is

a) 430

b) 530

c) 560

d) 660

11 / 30

11. Compared to ordinary Portland cement, the ultimate strength of pozzolana Portland cement is

a) same

b) more

c) less

d) very much less

12 / 30

12. Tripoli is a type of

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) none of the above

13 / 30

13. The artificial seasoning of timber may

a) reduce moisture

b) make light and strong

c) make fire resistance

d) remove moisture

14 / 30

14. The maximum percentage of water absorption of 2nd class bricks in 24 hrs should be limited to

a) 10%

b) 15%

c) 20%

d) 24%

15 / 30

15. The advantage of adding pozzolana to lime is

a) to impart greater strength

b) all of the above

c) to reduce shrinkage

d) to increase resistance to cracking

16 / 30

16. The vehicle used in the case of enamel paints is

a) varnish

b) linseed oil

c) water

d) all of the above

17 / 30

17. Common sand is a variety of

a) calcite

b) quartz

c) felspar

d) chlorite

18 / 30

18. *The main purpose of seasoning is

a) to make the timber fire-resistant

b) to remove the moisture from the timber at a uniform rate

c) to make the timber waterproof

d) none of the above

19 / 30

19. Portland cement manufactured from pure white chalk and clay but free from iron oxide is known as

a) low heat Portland cement

b) quick setting cement

c) white cement

d) none of the above

20 / 30

20. A badly mixed cement concrete results in

a) segregation

b) bleeding

c) honeycombing

d) none of the above

21 / 30

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

a) dicalcium silicate

b) tricalcium silicate

c) tricalcium aluminate

d) tetracalcium aluminate

22 / 30

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

a) stratified

b) unstratified

c) foliated

d) all of the above

23 / 30

23. Slate and marble stone belong to

a) igneous rocks

b) metamorphic rock

c) sedimentary rock

d) foliated rocks

24 / 30

24. 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┬░

25 / 30

25. 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

26 / 30

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

a) 20%

b) 30%

c) 40%

d) 50%

27 / 30

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

a) tricalcium aluminate

b) tricalcium silicate

c) dicalcium silicate

d) gypsum

28 / 30

28. Normally, the wood used for scaffolding is

a) mango

b) bamboo

c) shisham

d) sal

29 / 30

29. 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%

30 / 30

30. *The stone that exhibits more fire-resisting characteristics is

a) granite

b) marble

c) limestone

d) compact sandstone

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Construction Materials Online Test – Paper 2

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