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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Certificate: No
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1 / 30

1. 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%

2 / 30

2. Low porosity brick has

a) low strength

b) high strength

c) more absorption capacity

d) all of the above

3 / 30

3. The pozzolana Portland cement gains strength

a) in the same time as ordinary Portland cement

b) in less time than ordinary Portland cement

c) in more time than ordinary Portland cement

d) difficult to tell

4 / 30

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

a) lime

b) silica

c) manganese

d) iron oxide

5 / 30

5. The defect in painting caused due to the sliding of one layer of paint over another layer is known as

a) wrinkling

b) peeling

c) alligatoring

d) none of the above

6 / 30

6. A badly mixed cement concrete results in

a) segregation

b) bleeding

c) honeycombing

d) none of the above

7 / 30

7. *The oily liquid in which base and pigment are dissolved to form a paint is called

a) thinner

b) filler

c) vehicle

d) none of the above

8 / 30

8. *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%

9 / 30

9. *The type of paint whose main constituent is white or colored cement and is used to protect plastered surfaces, brickwork, masonry in damp places is called

a) luminous paint

b) cement paint

c) bituminous paint

d) anticorrosive paint

10 / 30

10. The calcination of pure lime results in

a) quick lime

b) hydrated lime

c) slaked lime

d) fat lime

11 / 30

11. Which of the following is not a softwood

a) deodar

b) walnut

c) shisham

d) kali

12 / 30

12. *Soundness test of cement determines

a) quantity of free lime

b) ultimate strength

c) durability

d) initial setting

13 / 30

13. The solvent used in cement paints is

a) turpentine

b) water

c) spirit

d) kerosene

14 / 30

14. Plastic asphalt is

a) a mixture of cement and asphalt

b) a natural asphalt

c) a refinery product

d) none of the above

15 / 30

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

a) 20%

b) 30%

c) 40%

d) 50%

16 / 30

16. Excess of iron oxide in brick earth causes

a) loss of cohesion

b) decay of bricks

c) the color change i.e. from red to dark blue

d) none of the above

17 / 30

17. Normally bogus compounds found in cement during the burning process

a) alite

b) belite

c) celite

d) all of the above

18 / 30

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

a) 25%

b) 50%

c) 75%

d) 100%

19 / 30

19. *Plaster of Paris can be obtained from the calcination of

a) limestone

b) gypsum

c) dolomite

d) bauxite

20 / 30

20. *Granites are a type of

a) silicious rock

b) argillaceous rock

c) calcareous rock

d) none of the above

21 / 30

21. *To give a brilliant finish, the type of varnish used is:

a) water varnish

b) spirit varnish

c) turpentine varnish

d) oil varnish

22 / 30

22. *The minimum compressive strength of a 2nd class bricks should be

a) 25 kg/cm^2

b) 70 kg/cm^2

c) 105 kg/cm^2

d) 140 kg/cm^2

23 / 30

23. Refractory bricks are

a) neutral refractory brick

b) acid refractory brick

c) basic refractory brick

d) all of the above

24 / 30

24. Attrition test on stone is done to find out

a) rate of wear

b) toughness

c) compressive strength

d) hardness

25 / 30

25. Which of the following is a mineral?

a) quartzite

b) laterite

c) calcareous rock

d) calcite

26 / 30

26. 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

27 / 30

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

a) coloring agent

b) bleeding agent

c) waterproofer

d) air-entraining agent

28 / 30

28. *The seasoning of timber is done for

a) bark drying

b) pith drying

c) hot drying

d) humidity drying

29 / 30

29. The paint which has high reflective property is:

a) bronze paint

b) enamel paint

c) asbestos paint

d) cellulose paint

30 / 30

30. 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

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Construction Materials Online Test – Paper 2

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