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 temperature at which bricks are burnt varies from (low melting clay)

a) 400┬░ to 700┬░C

b) 700┬░ to 1000┬░ C

c) 1000┬░ to 1200┬░C

d) 1200┬░ to 1500┬░ C

2 / 30

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

a) 5%

b) 4%

c) 3%

d) 2%

3 / 30

3. Choose the correct

a) percentage of silica is increased in 1st class brick

b) percentage of alumina is increased in 1st class brick

c) percentage of alumina is increased in refractory brick

d) all of the above

4 / 30

4. Marble is found in

a) mechil

b) bagmati

c) koshi

d) none of the above

5 / 30

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

a) same

b) more

c) less

d) very much less

6 / 30

6. *Frog means

a) depression on top face of brick

b) special types of brick

c) projection of brick

d) all of the above

7 / 30

7. *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

8 / 30

8. 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

9 / 30

9. *Seasoning of timber is done for

a) increasing moisture content

b) decreasing moisture content

c) increasing the strength of timber

d) none of the above

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10. 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

11 / 30

11. *Quick lime is obtained from the burning of

a) kankar

b) limestone

c) slaked lime

d) white lime

12 / 30

12. The color of statutory marble used for sculptor's work is

a) red

b) blue

c) white

d) green

13 / 30

13. Lacquer paints are

a) generally applied on structural steel

b) are more durable compared to enamel paints

c) consisting of resin and nitro-cellulose

d) all of the above

14 / 30

14. *Plywood is made from

a) common timber

b) bamboo timber

c) teakwood only

d) all of the above

15 / 30

15. Granite is not suitable for ordinary building purposes because

a) it can not be polished

b) it is not a fireproof material

c) it is costly

d) it has less crushing strength

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. *The painting work is generally specified by

a) weight of the paint applied

b) labor used in the painting

c) area of the painted surface

d) all of the above

18 / 30

18. Find the one which is not used in quarrying

a) gun powder

b) gun cotton

c) marble powder

d) dynamite

19 / 30

19. The rocks which are formed due to the cooling of magma at a considerable depth from the earth's surface are called

a) Hypabyssal rocks

b) Volcanic rocks

c) Plutonic rocks

d) Igneous rocks

20 / 30

20. *Bitumen is used for

a) waterproofing

b) damp proofing

c) joint filler

d) all of the above

21 / 30

21. *The paint which gives illumination during the night is called

a) fluorescent paint

b) cellulose paint

c) enamel paint

d) none of the above

22 / 30

22. 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

23 / 30

23. *The setting and hardening of cement after the addition of water occur due to

a) binding action of water

b) hydration and hydrolysis of some constituent compounds of cement which act as glue

c) evaporation of water

d) none of the above

24 / 30

24. *Due to the attack of dry rot, the timber

a) cracks

b) shrinks

c) reduces to powder

d) none of the above

25 / 30

25. *Strike is used to remove the

a) crowded people

b) stop the work

c) surplus clay of the mould

d) all of the above

26 / 30

26. In the chemical composition of the test for loss on ignition, the cement is treated to a temperature of

a) 100┬░C

b) 200┬░C

c) 500┬░C

d) 1000┬░C

27 / 30

27. 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

28 / 30

28. To which category do the chromite bricks belong?

a) neutral refractory brick

b) acid refractory brick

c) basic refractory brick

d) all of the above

29 / 30

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

a) 25%

b) 50%

c) 75%

d) 100%

30 / 30

30. *Elastomers can extend up to

a) ten times their original dimensions

b) seven times their original dimensions

c) five times their original dimensions

d) three times their original dimensions

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Construction Materials Online Test – Paper 2

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