Environmental Engineering in CE Threshold limit value (TLV) means maximum permissible/acceptable concentration. TLV of phosgene in air is about __________ ppm (parts per million). 0.002 1.2 4.8 0.2 0.002 1.2 4.8 0.2 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE High noise levels produced during operation of fans and compressors can be reduced by using Mufflers (silencers) Lagging of noisy duct Accoustical absorbent None of these Mufflers (silencers) Lagging of noisy duct Accoustical absorbent None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Carbon monoxide is a pollutant, which causes Respiratory disease (e.g. asthma) Damage to building materials like marble Asphyxiation (suffocation) leading to death Retardation in crop growth Respiratory disease (e.g. asthma) Damage to building materials like marble Asphyxiation (suffocation) leading to death Retardation in crop growth ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Main pollutants released from iron & steel industry is SO₃, NO₂ & CO₂ CO, CO₂ & SO₂ H₂S, NO & SO₃ CO₂, H₂S & NO₂ SO₃, NO₂ & CO₂ CO, CO₂ & SO₂ H₂S, NO & SO₃ CO₂, H₂S & NO₂ ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE On prolonged exposure to high concentration of carbon monoxide (> 5000 ppm), man dies because Of jamming of respiratory tract It forms CO₂ by combining with oxygen present in the blood Of clotting of blood It forms carboxyhaemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen Of jamming of respiratory tract It forms CO₂ by combining with oxygen present in the blood Of clotting of blood It forms carboxyhaemoglobin by combining with haemoglobin of blood, thereby making it incapable of absorbing oxygen ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In a sedimentation tank, the detention period for water ranges from __________ hours. 8 to 12 24 to 32 16 to 20 2 to 4 8 to 12 24 to 32 16 to 20 2 to 4 ANSWER DOWNLOAD EXAMIANS APP
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