Environmental Engineering in CE Which of the following is the most severe air pollutant? SO₂ CO NOx Hydrocarbons SO₂ CO NOx Hydrocarbons 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. 5 1000 500 2000 5 1000 500 2000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE There are five concentric layers within the atmosphere which is differentiated on the basis of temperature. The atmospheric layer which lies close to the earth's surface in which human being along with other organisms live is called troposphere. The rate at which air temperature in the troposphere gradually decreases with height is about __________ °C/km. 6.5 0.05 15 1 6.5 0.05 15 1 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Out of the following, TLV of __________ is maximum (about 500 ppm). Carbon disulphide Acetaldehyde Toluene Carbon dioxide Carbon disulphide Acetaldehyde Toluene Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The main industrial source of emission of hydrogen sulphide air pollutant is Pulp and paper plant Coal based thermal power plants Petroleum refineries Metallurgical roasting & smelting plant Pulp and paper plant Coal based thermal power plants Petroleum refineries Metallurgical roasting & smelting plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following pollutants is not emitted during volcanic eruptions? H₂S Hydrocarbons CO SO₂ H₂S Hydrocarbons CO SO₂ ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS