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 standard size of a brick as per Nepal Standard (NBC205:2013) is

a) 20x 10x10 cm^3

b) 230x115x57 mm^3

c) 18x9x9 cm^3

d) 18x8x8 cm^3

2 / 30

2. *The undesirable properties of cement are due to the formation of

a) dicalcium silicate

b) tricalcium silicate

c) tricalcium aluminate

d) tetracalcium aluminate

3 / 30

3. *The kiln which may work regularly throughout the year is called

a) clamp

b) bull's kiln

c) hoffman's kiln

d) none of the above

4 / 30

4. Terracotta is used in building for

a) ornamental work

b) insulation

c) storage

d) none of the above

5 / 30

5. Marble is found in

a) mechil

b) bagmati

c) koshi

d) none of the above

6 / 30

6. The pigment used in paints for corrosion resistance is

a) red lead

b) white lead

c) gypsum

d) ferrous oxide

7 / 30

7. Suitable stone for a gravity retaining wall is

a) light

b) heavy

c) hard

d) soft

8 / 30

8. *In brick laying the tool used for lifting and spreading mortar and for forming joints is

a) scutch

b) trowel

c) square

d) bolster

9 / 30

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

a) 5%

b) 4%

c) 3%

d) 2%

10 / 30

10. The building stone used for bridge piers and columns is

a) granite

b) limestone

c) marble

d) sandstone

11 / 30

11. For normal consistency, the penetration in Vicat apparatus should be between

a) 35 to 38 mm

b) >40 mm

c) 20 to 30mm

d) 30 to 35mm

12 / 30

12. When the timber is attacked by fungus and reduced to powder, it is called

a) wet rot

b) dry rot

c) druxiness

d) doatiness

13 / 30

13. The constituent responsible for setting of hydraulic lime underwater is

a) silica

b) clay

c) calcium oxide

d) carbon dioxide

14 / 30

14. *The number of standard bricks required for one cubic meter of brick masonry (IS standard) is

a) 400

b) 500

c) 750

d) 250

15 / 30

15. The percentage of alumina in good brick earth lies between

a) 10-20%

b) 20-30%

c) 30-40%

d) 40-50%

16 / 30

16. The top and sides of a clamp (pazawah) is plastered with mud and cow dung to prevent....

a) stealing of brick

b) low quality brick

c) escape of heat

d) firing the neighboring houses

17 / 30

17. The artificial seasoning of timber may

a) reduce moisture

b) make light and strong

c) make fire resistance

d) remove moisture

18 / 30

18. *The main constituent, which is mainly responsible for hydraulicity is

a) water

b) clay

c) silica

d) carbon dioxide

19 / 30

19. In the briquette test, the seven-day tensile strength of good Portland cement should not be less than

a) 20 kg/cm^2

b) 30 kg/cm^2

c) 25 kg/cm^2

d) 35 kg/cm^2

20 / 30

20. Limestone is a

a) igneous rock

b) sedimentary rock

c) metamorphic rock

d) granite rock

21 / 30

21. *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

22 / 30

22. The process of taking out stones of various sizes from natural rocks is known as

a) dressing

b) seasoning

c) quarrying

d) none of the above

23 / 30

23. 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

24 / 30

24. *The paints used in aircraft are

a) dry paints

b) cellulose paints

c) water paints

d) emulsion paints

25 / 30

25. 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%

26 / 30

26. 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

27 / 30

27. Which of the following is a rock?

a) gypsum

b) augite

c) calcite

d) mica

28 / 30

28. German silver is an alloy of

a) zinc, lead, and nickel

b) copper, lead, and nickel

c) copper, zinc, and nickel

d) copper, lead, and zinc

29 / 30

29. The advantage of adding pozzolana to lime is

a) increased strength to cracking

b) reduced shrinkage

c) increased resistance to chemical attack

d) impart greater strength

30 / 30

30. Slate is a metamorphic rock obtained from the structural change of

a) shale

b) granite

c) sandstone

d) marble

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Construction Materials Online Test – Paper 2

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