Environmental Engineering in CE Which of the following is the most active zone of atmosphere in which weathering events like rain, storm & lightning occur? Troposphere Thermosphere Stratosphere None of these Troposphere Thermosphere Stratosphere None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE COD of raw municipal sewage may be in the range of about __________ mg/litre. 1500-2500 5-10 1-2 90-120 1500-2500 5-10 1-2 90-120 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)? Peroxyacyl nitrate Carbon monoxide Benzopyrene Sulphur dioxide Peroxyacyl nitrate Carbon monoxide Benzopyrene Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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. 2000 1000 500 5 2000 1000 500 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of carbon monoxide in atmosphere produced by decomposition of chlorophyl and haemoglobin breakdown of some animals, beyond TLV (>50 ppm) Causes increase in sea level Inhances the green house effect Causes asphyxia Acts as a green house gas thereby raising earth's temperature Causes increase in sea level Inhances the green house effect Causes asphyxia Acts as a green house gas thereby raising earth's temperature ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Sound produced by an automobile horn heard at a distance of 1.5 metres corresponds to about __________ decibels. 120 150 180 90 120 150 180 90 ANSWER DOWNLOAD EXAMIANS APP
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