2 votes, 5 avg

Environmental Engineering (GPSC Civil PYQs) Online Test 1 (Free)

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Your Name

1 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

The noise level at the boundary of the public place where loudspeaker or public address system or any other noise source is being used shall not exceed __________ above the ambient noise standards for the area or __________ whichever is lower

5 dB (A), 70 dB (A)

5 dB (A), 75 dB (A)

10 dB (A), 70 dB (A)

10 dB (A), 75 dB (A)

2 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

Leachate is a liquid that comes out of

septic tanks

sanitary landfill

compost plants

aerated lagoons

3 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

The best Coagulant for removing the color of water is

iron sulphate

lime

alum

copper sulphate

4 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

Activated sludge is the

aerated sludge in the aeration tank

sludge settled in the humus tank

sludge in the secondary tank after aeration and rich in microbial mass

sludge in the secondary tank after aeration and rich in nutrients

5 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

Backwash arrangement is made only in the case of

fine screens

skimmers

slow sand filter

rapid sand filter

6 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

A thermal power plant burns coal at the rate of 10 tonnes / hour. If the coal has sulphur content of 9%, then the rate of emission of SO2 will be __________

250 grams / second

500 grams / second

750 grams / second

1000 grams / second

7 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

A water treatment plant treats 1 Million Liter per day of water. If it uses 10 kg of chlorine per day, then the chlorine dosage is

0.1 mg / lit

1.0 mg / lit

10 mg / lit

100 mg / lit

8 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

As per BIS 10500-2012, Total hardness (as CaCO3) in drinking water should not exceed

200 mg / lit

300 mg / lit

500 mg / lit

600 mg / lit

9 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

In conventional activated sludge process, MLSS is generally kept in which range ?

< 100 mg/l

1000-2000 mg/l

2000-3000 mg/l

3000-5000 mg/l

10 / 10

Category: Environmental Engineering (GPSC Civil PYQs)

Sludge bulking can be controlled by :

chlorination

coagulation

aeration

denitrification

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Environmental Engineering (GPSC Civil PYQs) Test 1 (Free)

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