Civil Engineering Mcqs — Test 41
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Question 1
The detention period and overflow rate respectively for plain sedimentation as compared to sedimentation with coagulation are generally_______________?
Question 2
Alum as a coagulant is found to be most effective when pH range of water is______________?
Question 3
The alum, when added as a coagulant in water_______________?
Question 4
In water treatment, rapid gravity filters are adopted to remove_______________?
Question 5
The effective size of sand particles used in slow sand filters is_______________?
Question 6
Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters. Reason R : The sand used in slow sand filters is finer than that in rapid sand filters. Select your answer based on the coding system given below?
Question 7
The percentage of filtered water, which is used for backwashing in rapid sand filters, is about______________?
Question 8
The rate of Alteration of pressure filters is_________________?
Question 9
Chlorine demand of water is equal to________________?
Question 10
The percentage of chlorine in fresh bleaching powder is about________________?