Time Left - 12:00 mins
BARC 2020: Environment Engineering Nuclear Quiz 2
Attempt now to get your rank among 754 students!
Question 1
A water sample has concentration of OH — ion measured on 0.17 mg/L at 25°C. What is the pH of the water sample?
Question 2
A coagulant treatment plant with a flow of 0.6 m3/sec requires 18 mg/l of alum. The concentration of suspended solids in inflow of raw water is 40 mg/l. If the effluent suspended solids concentration is 12 mg/l, then concentration (in mg/l) of dry sludge removed is
Question 3
A water sample having particle distribution as shown below. Find particle removal efficiency of the sedimentation tank.
Given, Total solids in suspended form =1000g and Over flow rate is .35 mm/sec
Question 4
Find the coincident draft of a city with population 150000 having per capita demand of 225 litres per day.
Question 5
Flocculation of iron from water by addition of lime is an example of which of the following process?
Question 6
Find the sludge volume index when one litre of sewage when allowed to settle for 30 minutes gave a sludge volume of 36 cm3. The concentration of the sludge is 3000 mg/l.
Question 7
Which of the following conditions create a trapping flume
Question 8
A colony of 500 residents has water supply of 75 lpcd. A septic tank is to be designed with detention period of 24 hours. Further the effluent from the septic tank is to be disposed where the percolation rate is 25 minutes.
Determine the volume of the septic tank required if the rate of accumulation of sludge is 30 litres per capita per year.
Determine the volume of the septic tank required if the rate of accumulation of sludge is 30 litres per capita per year.
Question 9
A reactor has an inflow of sewage 180 liters/min. The influent COD is 1000 mg/l and the effluent COD is 250 mg/l. The waste water contains 50% of biodegradable waste. The volume of methane gas produced per day is _____ m3.
Question 10
During a BOD test conducted on 5% dilution of wastewater, following observations were taken:
Dissolved oxygen of aerated water used for dilution = 3.6 mg/l
Dissolved oxygen of original wastewater sample = 0.8 mg/l
Dissolved oxygen of diluted sample after 5 days of incubation= 0.7 mg/l
Compute the dissolved oxygen of test specimen
Dissolved oxygen of aerated water used for dilution = 3.6 mg/l
Dissolved oxygen of original wastewater sample = 0.8 mg/l
Dissolved oxygen of diluted sample after 5 days of incubation= 0.7 mg/l
Compute the dissolved oxygen of test specimen
- 754 attempts
- 5 upvotes
- 6 comments
Sep 23ESE & GATE CE
