No. of questions - 20
Time - 10 min
Negative marking : -0.25 mark
1.
Which of the following takes maximum time to decay?
2.
A water body having high BOD indicates that its water is
3.
‘Green Muffler’ is related to
4.
The water pollution in a river is determined by measuring the dissolved amount of
5.
Which of the following is not a water pollutant?
6.
Which one of the following is not related to air pollution?
7.
The gas which leaked from Union Carbide factory, Bhopal was
8.
Which of the following is not destroyed by bacteria?
9.
Which one of the following is a bioindicator of air pollution?
10.
The problem of water pollution with Arsenic is maximum in
11.
Polythene bags cannot be destroyed because they are made of
12.
Fly ash is a pollutive combustion product of burning
13.
Bhopal Gas Tragedy (leakage of methyl isocyanate ‘MIC’) accident happened on
15.
Which one of the following is biodegradable?
16.
Which one of the following gases is responsible for causing acid rain in the atmosphere?
17.
Which one of the following is an air pollutant gas and is released by burning fossil fuel?
18.
Biological Oxygen Demand (BOD) is an indication of pollution in
19.
Acid rain is caused by
20.
BOD is maximum in the Ganga river between
