Environmental Engineering in CE From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm. 500 1 50 5 500 1 50 5 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The average thickness of ozone layer in stratosphere is about __________ dobson unit (DU). 750 1500 230 20 750 1500 230 20 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of iron and manganese in water causes Discoloration of bathroom fixtures Reduction in its dissolved oxygen content Temporary hardness None of these Discoloration of bathroom fixtures Reduction in its dissolved oxygen content Temporary hardness None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water chemical treatment plant, use of chloramines ensures Disinfection Removal of permanent hardness Taste & odour control Weed control in reservoirs Disinfection Removal of permanent hardness Taste & odour control Weed control in reservoirs ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Inhalation of lead compounds present in the automobile exhausts (using leaded petrol) causes All of these Anaemia Nervous system disorder Blood poisoning All of these Anaemia Nervous system disorder Blood poisoning ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In water treatment, alum[Al2(SO₄)3] is used for the process of Disinfection Coagulation Filtration Sedimentation Disinfection Coagulation Filtration Sedimentation ANSWER DOWNLOAD EXAMIANS APP
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