Environmental Engineering in CE Threshold Limit Value (TLV) is the maximum allowable concentration (i.e. safe limit) of pollutants in air. Safe limit for SO₂ in air is __________ ppm. 1000 5 2000 500 1000 5 2000 500 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Copper sulphate Sodium sulphate Hydrochloric acid Lime Copper sulphate Sodium sulphate Hydrochloric acid Lime ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called Stratosphere Thermosphere Mesosphere Troposphere Stratosphere Thermosphere Mesosphere Troposphere ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels. 75 140 95 120 75 140 95 120 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is the minimum (about 0.02 ppm). Phosgene Bromine MIC (methyl iso-cynate) Ozone Phosgene Bromine MIC (methyl iso-cynate) Ozone ANSWER DOWNLOAD EXAMIANS APP
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