Environmental Engineering in CE Peroxyacyl nitrate (PAN), a pollutant is found in the Automobile exhaust Exhaust of nitric acid plant Flue gas of coal based power plant Exhaust of sulphuric acid plant Automobile exhaust Exhaust of nitric acid plant Flue gas of coal based power plant Exhaust of sulphuric acid plant ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels. 90 60 120 105 90 60 120 105 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Presence of iron and manganese in water causes Temporary hardness Discoloration of bathroom fixtures Reduction in its dissolved oxygen content None of these Temporary hardness Discoloration of bathroom fixtures Reduction in its dissolved oxygen content None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. 85 145 125 105 85 145 125 105 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following is a manmade source of air pollution? Automobile exhaust All of these Bacterial action in soil and swamp areas Forest fire Automobile exhaust All of these Bacterial action in soil and swamp areas Forest fire ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water Both (i) and (iii) Only (iii) Only (i) Both (i) and (ii) Both (i) and (iii) Only (iii) Only (i) Both (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
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