APSC JE Civil Engineering 2021 PYQ with Answers । Part - 5
41 Which of the following processes takes place in trickling filters?
Correct Answer is: [D] Biological action
42 For three-dimensional movement of a weight, which one of the following is most suitable?
Correct Answer is: [C] Crane
43 For excavating solid rocks, the most suitable equipment is
Correct Answer is: [B] power shovel
44 Gantt chart indicates
Correct Answer is: [B] comparison of actual progress with the scheduled progress
45 In CPM
Correct Answer is: [A] time optimization is given prime importance
46 BOD₅ represents 5-day biochemical oxygen demand at a temperature of
Correct Answer is: [B] 20 °C
47 When fluoride concentration in water exceeds 1.5 mg/litre, the disease caused is
Correct Answer is: [B] fluorosis
48 The suitable layout of distribution system for a city with roads of rectangular pattern is
Correct Answer is: [A] grid iron system
49 For a country like India, which system of sewerage is followed?
Correct Answer is: [B] Combined system
50 If L, B, and D are the length, breadth, and depth of water in a rectangular sedimentation tank of total discharge Q, then the settling velocity is
Correct Answer is: [D] Q/(L x B)
