Environmental Engineering In Ce – Page 12

There are five concentric layers within the atmosphere which is differentiated o

There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the…

Iron & manganese present as pollutant in water can not be removed by

Ambient noise level can be reduced by __________ decibels by planting trees (lik

Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools).

Which of the following is the most widely used disinfectant in water treatment?

Pick out the one which is not a chemical coagulant.

Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetrae

Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes

Which of the following industries discharge mercury as a pollutant?

Which of the following is the most severe air pollutant?

Which is the most widely used coagulant for the treatment of turbid water?

Biological oxidation ponds remove organic matters present in the polluted water

Biological oxidation ponds remove organic matters present in the polluted water by

Exposure to small amount of __________ results in high blood pressure & heart di

Exposure to small amount of __________ results in high blood pressure & heart disease in human beings.

High noise levels produced during operation of fans and compressors can be reduc

High noise levels produced during operation of fans and compressors can be reduced by using