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. To which category do the bauxite bricks belong?

a) neutral refractory brick

b) acid refractory brick

c) basic refractory brick

d) all of the above

2 / 30

2. Inner part of the timber log as touching the pitch is called

a) sapwood

b) cambium layer

c) heartwood

d) bark

3 / 30

3. 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

4 / 30

4. Identify the process responsible for the formation of metamorphic 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

5 / 30

5. Excess of silica in brick earth causes

a) loss of cohesion

b) impermeable

c) cracking and warping on drying

d) brittleness

6 / 30

6. Loss on ignition in cement should not exceed

a) 1%

b) 4%

c) 8%

d) 12%

7 / 30

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

a) water varnish

b) spirit varnish

c) turpentine varnish

d) oil varnish

8 / 30

8. Which one of the following does not show good cleavage?

a) calcite

b) mica

c) feldspar

d) silica

9 / 30

9. Fire bricks are used

a) to reflect heat

b) to increase heat flow

c) to decrease heat flow

d) all of the above

10 / 30

10. Very strong lime mortar is obtained from

a) quick lime

b) semi-hydraulic lime

c) hydrated lime

d) hydraulic lime

11 / 30

11. *Brass is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) copper and chromium

12 / 30

12. Quarry sap is found in

a) fresh wood

b) fresh stone

c) fresh brick

d) fresh lime

13 / 30

13. Which of the following has the highest crushing strength

a) limestone

b) granite

c) gneiss

d) laterite

14 / 30

14. *The strength of timber is maximum along

a) parallel to the grain

b) perpendicular to the grain

c) 45┬░ to the grain

d) the same in all directions

15 / 30

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

a) tricalcium aluminate

b) tricalcium silicate

c) dicalcium silicate

d) gypsum

16 / 30

16. Stucco paints are suitable for

a) stone masonry

b) brick walls

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

d) none of the above

17 / 30

17. The standard size of the brick as per the Indian standard is

a) 20├ù10├ù10 cm

b) 23x12x8 cm

c) 19├ù9├ù9 cm

d) 18├ù9├ù9 cm

18 / 30

18. PVC controls in paint

a) gloss

b) cohesion & adhesion

c) durability & washability

d) all of the above

19 / 30

19. *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

20 / 30

20. *The cracks that extend from bark towards the sapwood in the cross-section of a tree are called

a) radial shakes

b) star shakes

c) heart shakes

d) cup shakes

21 / 30

21. *Gravel is a type of

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) none of the above

22 / 30

22. 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

23 / 30

23. Lime suitable for making mortar of good strength

a) hydraulic lime

b) fat lime

c) lean lime

d) none of the above

24 / 30

24. *Seasoning of timber

a) makes the timber light, strong, and stable

b) prevents warping, cracking, and shrinkage in timber

c) makes timber resistant to decay by fungi, termites, etc., and also resistant to electricity

d) all of the above

25 / 30

25. Ultimate strength to cement is provided by:

a) Tricalcium silicate

b) Dicalcium silicate

c) Tricalcium aluminate

d) Tetra-calcium alumino ferrite

26 / 30

26. *Lacquer is

a) distemper

b) oil paint

c) spirit varnish

d) none of the above

27 / 30

27. The explosive not used for blasting the rocks underwater is

a) gun powder

b) gun cotton

c) dynamite

d) cordite

28 / 30

28. The defect caused by the shrinkage of timber is

a) crook

b) cup and bow

c) twist

d) all of the above

29 / 30

29. The fineness of cement is tested by:

a) air permeability method

b) le-chatlier method

c) vicat's apparatus

d) all of the above

30 / 30

30. Terracotta is used in building for

a) ornamental work

b) insulation

c) storage

d) none of the above

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Construction Materials Online Test – Paper 2

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