Environmental Engineering in CE TLV of ammonia, nitrogen dioxide and phenol vapor in air is __________ ppm. 2000 1000 5 100 2000 1000 5 100 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Which of the following causes death by asphyxiation, if its presence in atmospheric air exceeds maximum allowable concentration (i.e. > 50 ppm)? Benzopyrene Peroxyacyl nitrate Sulphur dioxide Carbon monoxide Benzopyrene Peroxyacyl nitrate Sulphur dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The amount of coagulant needed for coagulation of water increases with(i) Increase in turbidity of water(ii) Decrease in turbidity of water(iii) Increase in temperature of water(iv) Decrease in temperature of waterThe correct answer is (i) and (ii) (ii) and (iv) (i)and(iv) (ii) and (iii) (i) and (ii) (ii) and (iv) (i)and(iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE The most commonly used chemical coagulant in water treatment is Ferrous sulphate Lime Alum Hydrazine Ferrous sulphate Lime Alum Hydrazine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE In sewage treatment, its sedimentation is speeded up by commonly adding Lime Sodium sulphate Hydrochloric acid Copper sulphate Lime Sodium sulphate Hydrochloric acid Copper sulphate ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering in CE Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. 105 85 145 125 105 85 145 125 ANSWER DOWNLOAD EXAMIANS APP
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