Environmental Engineering in CE Beyond what concentration of H₂S in air, acute danger to human life exists? 700 ppm 300 ppm 50 ppm 100 ppm 700 ppm 300 ppm 50 ppm 100 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Coal mines drainage waste water (acidic in nature) results from the earth's water percolating through the voids created in coal bed during mining. This polluted water which either drains out naturally to water courses or are removed before starting the mining is Diluted with fresh water to reduce its acidity Left as such without any treatment Neutralised by alkali treatment None of these Diluted with fresh water to reduce its acidity Left as such without any treatment Neutralised by alkali treatment None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The major reason of hydrodynamic noise (i.e., noise resulting from liquid flow) is Boundary layer separation Fluctuation in liquid flow Cavitation Pipe vibrations Boundary layer separation Fluctuation in liquid flow Cavitation Pipe vibrations ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is an adsorbant for removal of nitrogen oxides from gas/air? Pulverised limestone Silica gel Active carbon Bog iron (iron oxide) Pulverised limestone Silica gel Active carbon Bog iron (iron oxide) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Lagooning process is mainly a means of the None of these Sludge disposal Biological treatment of wastes Reduction of excessive flow in sewers None of these Sludge disposal Biological treatment of wastes Reduction of excessive flow in sewers ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water chemical treatment plant, use of chloramines ensures Taste & odour control Disinfection Weed control in reservoirs Removal of permanent hardness Taste & odour control Disinfection Weed control in reservoirs Removal of permanent hardness ANSWER DOWNLOAD EXAMIANS APP
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