Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Chemical Engineering
»
Environmental Engineering
Maximum allowable concentration of CO2 in air for safe working is __________ ppm (parts per million).
50
1000
2000
5000
Correct Answer:
5000
← Previous Question
Next Question→
More Questions from
Environmental Engineering
Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes
Operating principle of cyclone separator is based on the action of __________ dust particles.
Coal washing waste water containing about 3% suspended solids (comprising of clay, slate, stone etc.) is treated for solid particles removal
The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the
Scale formation in boiler is controlled by
Most of the atmospheric air pollutants are present in large quantity in
Replenishment of dissolved oxygen in water stream polluted with industrial waste occurs by
H2S present in gaseous stream can be removed by adsorption on
Aerobic biological oxidation ponds used for the purification of polluted water
Polluted water having low BOD are most economically treated in
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments