Environmental Engineering in CE There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant? Lead Aluminium Arsenic Mercury Lead Aluminium Arsenic Mercury ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Copper sulphate Hydrochloric acid Sodium sulphate Lime Copper sulphate Hydrochloric acid Sodium sulphate Lime ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Threshold limit value (TLV) i.e., the maximum permissible safe limit of phosgene gas which Hitler used to use to kill his enemies in 'gas chamber' is about __________ ppm. 100-200 100-1000 10-100 100-200 100-1000 10-100 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The most commonly used chemical coagulant in water treatment is Hydrazine Lime Alum Ferrous sulphate Hydrazine Lime Alum Ferrous sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. 125 85 105 145 125 85 105 145 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Thermal pollution due to excessive heat & temperature in the working place causes All of these Reduction in working efficiency of manpower High breathing rate Fatigue All of these Reduction in working efficiency of manpower High breathing rate Fatigue ANSWER DOWNLOAD EXAMIANS APP
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