SSC-JUNIOR ENGINEER (Civil & Structural) Online Exam 2019 (Part-III)

Total Questions: 50

31. Which of the following is correct about plywood?

Correct Answer: D. Three or more veneers in odd numbers are placed one above the other with the direction of grains of successive layers at right angles to each other.
Solution:Plywoods: The meaning of term ply is a thin layer. The plywood are boards which are prepared from thin layers of wood or veneers.

The three or more veneers in odd numbers are placed one above the other with the direction of grains of successive layers at right angles to each other.

They are held in position by application of suitable adhesives. The placing of veneers normal to each other increases the longitudinal and transverse strengths of plywood.

32. Which of the following constituents is maximum in percentage in a good brick earth?

Correct Answer: C. Silica
Solution:Silica:
  • Brick earth should contain about 50% of silica.
  • It is responsible for preventing cracking, shrinking and warping of raw bricks.
  • It also affects the durability of bricks.
  • If present in excess, then it destroys the cohesion between particles and the brick becomes brittle.

33. Estimate the quantity of 2.5 cm thick Damp-Proof Course required for construction of a room of 4m × 3 m internal dimensions. Thickness of the wall should be 250 mm. Two windows 2 m width and 1.5 m height and one door 1.5 m width and 2.2 m height are to be provided to the room. The height of room should be 4 m.

Correct Answer: D. 3.375m with thickness 2.5 cm
Solution:

34. The amount of calcium carbonate in lime stone is determined by which of the following tests?

Correct Answer: D. Acid test
Solution:In the construction industry, Lime is one of the best binding materials available and is used widely for different purposes such as mortar making, plastering, whitewashing, etc. Lime obtained by the calcination of limestone, which occurs naturally.

The acid test is used to determine the amount of calcium carbonate and type of lime present in the limestone.

35. There are 40 vehicles on a 1 km length of lane of a roadway at a given instant. It is :

Correct Answer: C. traffic density
Solution:Traffic density: Traffic density is the number of vehicles occupying a unit length of lane of roadway at a given instant.
  • expressed as vehicles per kilometer.
  • traffic volume = traffic density × traffic speed
  • the highest traffic density occur when the vehicles are at a stand still on a given route. The traffic volume approach to zero.

36. Solve this statement :

Correct Answer: B. end bearing stiffeners, intermediate transverse stiffeners, longitudinal stiffeners at 0.2d from compression face and at neutral axis are needed
Solution:

37. 24,00,000 litres of water passes through a sedimentation tank which has 300 cubic meter volume per day. The detention time of the tank is:

Correct Answer: A. 3 hours
Solution:

38. Inside walls of two rooms of internal dimensions 3m × 4 m and 4 m × 5 m are to be plastered using 1 : 6 cement sand mortar. Height of the rooms is 3 m. What is approximate cost of plastering the walls if the rate quoted by contractor for plastering is ₹1,000/- per square meter? Consider total two doors of size 1.2m × 2m and four windows of size 1.5 m × 1.5 m are provided and they all are in different walls.

(Rate quoted by the contractor is all inclusive i.e., labour, material, etc.)

Correct Answer: C. ₹ 82,200
Solution:

39. Which of the following statements is correct?

Correct Answer: C. Ratio of quantity of water stored into the root zone of the crop of the quantity of water delivered to the field is called water application efficiency.
Solution:

40. A certain fixed amount from the gross rent or income is set aside annually to accumulate the cost of construction when the building life is over is called.

Correct Answer: B. sinking fund
Solution:Sinking fund: A certain amount of gross rent is set aside annually as sinking fund to accumulate the total cost of construction when the life of the building is over. This annual sinking fund is also taken as outgoings.