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.Management Sciences
A. reduced at higher pH value of water
B. unaffected by pH value of water
C. increased at higher pH value of water
D. highest at pH value equal to 7
Related Mcqs:
- Alum as a coagulant is found to be most effective when pH range of water is______________?
- A. 2 to 4 B. 4 to 6 C. 6 to 8 D. 8 to 10...
- Activated carbon is used for_____________?
- A. disinfection B. removing hardness C. removing odours D. removing corrosiveness...
- Select the correct statement?
- A. 5 day BOD is the ultimate BOD B. 5 day BOD is greater than 4 day BOD keeping other conditions same C. 5 day BOD is less than 4 day BOD keeping other conditions same D. BOD does nof depend on time...
- The ratio of 5 day BOD to ultimate BOD is about_______________?
- A. 1/3 B. 2/3 C. 3/4 D. 1.0...
- Period of cleaning of slow sand filters is about________________?
- A. 24 – 48 hours B. 10-12 days C. 2-3 months D. 1-2 year...
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