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 crushing strength of a stone depends upon its

a) texture

b) specific gravity

c) luster

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

2 / 30

2. *Slate stone is a

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) granular rock

3 / 30

3. Stucco paints are suitable for

a) stone masonry

b) brick walls

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

d) none of the above

4 / 30

4. The function of the base of an oil paint is

a) to form the body of the paint

b) to reduce the shrinkage cracks

c) to reinforce the film of the paint after drying

d) to prevent the penetration of paint to lower surfaces

5 / 30

5. *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

6 / 30

6. 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

7 / 30

7. *The internal size of the mould used in brick preparation is

a) smaller than the size of fully burnt brick

b) larger than the size of fully burnt brick

c) equal to the size of fully burnt brick

d) none of the above

8 / 30

8. During burning of dried bricks, the sequence of chemical changes that take place, is as under

a) vitrification-dehydration-oxidation

b) vitrification-oxidation-dehydration

c) dehydration-oxidation-vitrification

d) dehydration-vitrification-oxidation

9 / 30

9. *Galvanizing means

a) depositing a fine film of zinc on iron or steel by dipping in molten zinc

b) depositing a fine film of tin on iron or steel by dipping in molten tin

c) depositing a fine film of lead on iron or steel by dipping in molten iron

d) none of the above

10 / 30

10. *Which one of the following pairs is correctly matched?

a) sandstone......igneous rock

b) lime stone.....sedimentary rock

c) basalt...........metamorphic rock

d) granite...........argillaceous rock

11 / 30

11. Marble contains only

a) lime

b) silica

c) lime and silica

d) none of the above

12 / 30

12. *Quick lime is

a) calcium oxide

b) calcium hydroxide

c) calcium carbonate

d) none of the above

13 / 30

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

a) 30%

b) 40%

c) 50%

d) 60%

14 / 30

14. Plywood is obtained by gluing wooden sheets at a specification of

a) 100 to 150 N/cm^2

b) 60┬░ to 130┬░ C

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

d) none of the above

15 / 30

15. 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

16 / 30

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

a) dicalcium silicate

b) tricalcium silicate

c) tricalcium aluminate

d) tetracalcium aluminate

17 / 30

17. *Duco is the trade name for

a) bituminous paint

b) oil paint

c) cellulose paint

d) water paint

18 / 30

18. The physical classification divides the rocks into

a) calcareous, argillaceous, and silicious

b) organic, semi-organic, and inorganic

c) igneous, sedimentary, and metamorphic

d) stratified, unstratified, and foliated

19 / 30

19. *The minerals found in rocks are

a) quartz

b) feldspar

c) mica

d) all of the above

20 / 30

20. Rocks having silica as the main constituent are called

a) calcareous rocks

b) argillaceous rocks

c) siliceous rocks

d) none of the above

21 / 30

21. *The important test to be conducted on a stone used in docks & harbours is

a) Hardness test

b) Workability test

c) Weight test

d) Toughness test

22 / 30

22. If fine sand or ash is sprinkled on the inner surface of the mould, the bricks are known as

a) slope moulded

b) sand moulded

c) table moulded

d) machine moulded

23 / 30

23. *Swelling of bricks is known as

a) bloating

b) lamination

c) chuffs

d) efflorescence

24 / 30

24. *Plywood is made from

a) common timber

b) bamboo timber

c) teakwood only

d) all of the above

25 / 30

25. A piece of sawn timber whose cross-sectional dimensions exceed 5 cm in one direction and 20 cm in the other direction is called a

a) cant

b) deal

c) bauk

d) strip

26 / 30

26. Knots in timber are

a) speckled strains

b) signs of branches cut off

c) defects caused by crushing fibers

d) splits radiating from the center

27 / 30

27. Tripoli is a type of

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) none of the above

28 / 30

28. *Snowcem paint is a type of

a) cement paint

b) aluminium paint

c) bronze paint

d) cellulose paint

29 / 30

29. 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

30 / 30

30. *Bitumen is used for

a) waterproofing

b) damp proofing

c) joint filler

d) all of the above

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Construction Materials Online Test – Paper 2

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