Time Left - 08:00 mins
PSC Civil Engg: Environmental Quiz 7
Attempt now to get your rank among 3974 students!
Question 1
Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I
A) Sludge volume index
B) Thickening of sludge
C) Scum removal
D) Recycling of effluent
List-II
1. Settling in primary sedimentation tank
2. Settling in secondary sedimentation tank
3. Filtration in trickling filter
4. Activated sludge process
List-I
A) Sludge volume index
B) Thickening of sludge
C) Scum removal
D) Recycling of effluent
List-II
1. Settling in primary sedimentation tank
2. Settling in secondary sedimentation tank
3. Filtration in trickling filter
4. Activated sludge process
Question 2
8 kg of bleaching powder is required per day for disinfecting 5 million litres per day. The dose of chlorine has to be 0.4 ppm. The available chlorine in bleaching powder is _______%.
Question 3
As per Noise Pollution (Regulation and Control) Rules 2000 of India, the day time noise limit for a residential zone, expressed in dB (A) Leg, is
Question 4
A rectangular tank 18 m x 8 m x 4m of water depth treats 4 million litres of water per day. The detention time for tank will be ____hours.
Question 5
An advantage of COD test over BOD test is that
- 3974 attempts
- 34 upvotes
- 35 comments
Dec 24ESE & GATE CE