Environmental Engineering Facultative bacteria are able to work in Absence of oxygen only Presence as well as in absence of oxygen Presence of water Presence of oxygen only Absence of oxygen only Presence as well as in absence of oxygen Presence of water Presence of oxygen only ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering 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 water The correct answer is (ii) and (iv) (i) and (ii) (i)and(iv) (ii) and (iii) (ii) and (iv) (i) and (ii) (i)and(iv) (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally Less and less More and more More and less Less and more Less and less More and more More and less Less and more ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Sewage treatment units are normally designed for 15 - 28 years 15 - 20 years 28 - 30 years 5 - 10 years 15 - 28 years 15 - 20 years 28 - 30 years 5 - 10 years ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The major disadvantage of lime soda process of water softening is that It is unsuitable for softening the water of excessive hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water The effluent cannot be reduced to zero hardness It is unsuitable for softening the water of excessive hardness Huge amount of precipitate is formed which creates a disposal problem It is unsuitable for turbid and acidic water The effluent cannot be reduced to zero hardness ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is None of these Larger Smaller Same None of these Larger Smaller Same ANSWER DOWNLOAD EXAMIANS APP
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