Environmental Engineering In chlorination, with the rise in temperature of water, death rate of bacteria Decreases Increases Remains unaffected None of these Decreases Increases Remains unaffected None of these ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Generally the detention period for grit chambers is kept as 1 minute 5 minutes 12 hours 24 hours 1 minute 5 minutes 12 hours 24 hours 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 (iii) (ii) and (iv) (i)and(iv) (i) and (ii) (ii) and (iii) (ii) and (iv) (i)and(iv) (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The commonly used material for water supply pipes, which has the properties of being strong, not easily corroded and long life but is heavy and brittle, is Steel Reinforced cement concrete Copper Cast iron Steel Reinforced cement concrete Copper Cast iron ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is Smaller Same None of these Larger Smaller Same None of these Larger ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is (i) Presumptive coli-form test (ii) Confirmed coli-form test (iii) Completed coli-form test Both (i) and (iii) All (i), (ii) and (iii) Only (i) Both (i) and (ii) Both (i) and (iii) All (i), (ii) and (iii) Only (i) Both (i) and (ii) ANSWER DOWNLOAD EXAMIANS APP
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