Environmental Engineering in CE Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). 4.8 0.2 1.2 0.002 4.8 0.2 1.2 0.002 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm. 500 10000 1000 5 500 10000 1000 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE A masonry structure built below ground level, where biochemical reaction takes place due to anaerobic bacteria is called Skimming mill Septic tank Lagoon Cesspool Skimming mill Septic tank Lagoon Cesspool ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Green house effect is accentuated by Increased transportation activity All of these Rapid industrialisation Deforestation Increased transportation activity All of these Rapid industrialisation Deforestation ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Fine grit present in sewage is removed in the __________ during sewage treatment. Detritus tank Grit chamber Skimming tank Trickling filter Detritus tank Grit chamber Skimming tank Trickling filter ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Maximum permissible concentration (i.e. TLV) of DDT in public water supply system is __________ micro gram (μ g)/litre. 42 1050 332 2 42 1050 332 2 ANSWER DOWNLOAD EXAMIANS APP
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