Environmental Engineering in CE From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. 5 1 50 500 5 1 50 500 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. 332 42 1050 2 332 42 1050 2 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Carbonaceous particles having size less than 1 μm are called Smoke Aggregates Aerosols Grit Smoke Aggregates Aerosols Grit ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. 170 120 200 140 170 120 200 140 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following air pollutants is not toxic to vegetation i.e., doesn't cause vegetation damage? Hydrogen fluoride & nitrogen oxides Smog & ozone Sulphur dioxide & spray of weed killers Carbon monoxide Hydrogen fluoride & nitrogen oxides Smog & ozone Sulphur dioxide & spray of weed killers Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is the minimum (about 0.02 ppm). Ozone Bromine MIC (methyl iso-cynate) Phosgene Ozone Bromine MIC (methyl iso-cynate) Phosgene ANSWER DOWNLOAD EXAMIANS APP
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