Building Construction Technology Online Test

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
Randomization: Yes
Certificate: No
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1 / 30

1. The D.P.C. should be:

a) continued and unbroken through the length and thickness of the wall

b) sealed with bitumen at lap joints

c) even at the source of moisture

d) all of the above

2 / 30

2. If the average compressive strength is 4000kg/cm2 and standard deviation is 500, the coefficient of variation is:

a) 10%

b) 12.50%

c) 15%

d) 18.50%

3 / 30

3. Workability of concrete mix with a low water-cement ratio is determined by:

a) slump test

b) tensile strength test

c) compaction factor test

d) flexural strength test

4 / 30

4. The roof sloping in two directions is called:

a) Hipped roof

b) Gambrel roof

c) Flat roof

d) Mansard roof

5 / 30

5. Los Angeles machine is used to test the aggregate for:

a) crushing strength

b) impact value

c) abrasion resistance

d) water absorption

6 / 30

6. The joint preferred in a single brick wall to save facing bricks is:

a) english bond

b) flemish bond

c) double bond

d) garden wall bond

7 / 30

7. Bulking of sand is:

a) mixing of different sizes of sand particles

b) mixing of lime with sand

c) mixing of water with sand

d) swelling of sand when wetted

8 / 30

8. Sukhi is added to lintel mortar to:

a) Prevent shrinkage

b) Impact hydraulicity

c) Increase bulk

d) Decrease setting time

9 / 30

9. A plate load test is useful to determine:

a) bearing capacity of foundation

b) settlement of foundation

c) both bearing capacity and settlement of foundation

d) none of the above

10 / 30

10. Inert material of a cement concrete mix is:

a) Water

b) Cement

c) Aggregate

d) None of the above

11 / 30

11. The floor height of a 3 m building is connected to 17 numbers of tread/going; the number of risers is:

a) 16

b) 18

c) 15

d) 17

12 / 30

12. Too wet concrete may cause:

a) Segregation

b) Excessive laitance

c) Lower density

d) All of the above

13 / 30

13. The foundation used on weaker soil is:

a) column footing

b) grillage footing

c) raft footing

d) all of the above

14 / 30

14. Which of the following is not true about a cavity wall?

a) air space is provided within the wall

b) metal or ties are used to join the strops of the wall

c) air space is filled with suitable material

d) all of the above

15 / 30

15. The most important test to be conducted on a stone used in docks and harbors is:

a) Hardness test

b) Workability test

c) Weight test

d) Toughness test

16 / 30

16. Steam curing is used in:

a) columns only

b) long sides and columns

c) mass production of precast concrete

d) all of the above

17 / 30

17. The bricks having one or two edges rounded for use in curved corners are called:

a) round nose

b) bull nose

c) cow nose

d) buffalo nose

18 / 30

18. Bringing the floor to a true level surface by means of screeds is known as:

a) Topping

b) Bedding

c) Screeding

d) None of the above

19 / 30

19. Curing of concrete ensures:

a) volume stability strength

b) wear resistance

c) water tightness and durability

d) all of the above

20 / 30

20. In the slump test, each layer of concrete is compacted by a steel rod 60 cm long and 16 mm diameter for:

a) 20 times

b) 25 times

c) 30 times

d) 40 times

21 / 30

21. If the slump of the concrete mix is 60mm, its workability is:

a) low

b) medium

c) high

d) very high

22 / 30

22. The resistance of an aggregate to compressive force is known as?

a) Crushing value

b) Impact value

c) Abrasion value

d) None of these

23 / 30

23. The specific yield of soil depends upon:

a) Compaction of stratum

b) Distribution of pores

c) Shape and size of particles

d) All of the above

24 / 30

24. Minimum width of a load-bearing wall should be:

a) 115 mm

b) 230 mm

c) 300 mm

d) 400 mm

25 / 30

25. If x, y, and z are the fineness moduli of coarse, fine, and combined aggregates, the percentage (p) of fine aggregates to combined aggregates is:

a) P = (z-x / z-y)x100

b) P = (x-z / z-y)x100

c) P = (x-z / z+y)x100

d) P = (x+z / z-y)x100

26 / 30

26. Allowable shear stress of concrete depends upon:

a) shear strength

b) tensile strength

c) compressive strength

d) none of the above

27 / 30

27. The soundness test of cement by Le Chatelier's apparatus gives unsoundness due to:

a) Free lime only

b) Magnesium only

c) Both (a) and (b) above

d) None of the above

28 / 30

28. The process of mixing, transporting, placing, and compacting concrete using ordinary Portland cement should not take more than:

a) 30 minutes

b) 40 minutes

c) 60 minutes

d) 75 minutes

29 / 30

29. To prevent segregation, the maximum height for placing concrete is:

a) 100 cm

b) 125 cm

c) 150 cm

d) 200 cm

30 / 30

30. The concrete mix which causes difficulty in obtaining a smooth finish is known to possess:

a) Segregation

b) Internal friction

c) Hardness

d) Bleeding

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