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.Management Sciences
1) settling tank
2) digestion tank
3) aeration tank
The correct answer is?
A. only (1)
B. (1) and (2)
C. (1) and (3)
D. only (3)
Related Mcqs:
- Disinfection efficiency is________________?
- 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...
- The pathogens can be killed by_______________?
- A. nitrification B. chlorination C. oxidation D. none of the above...
- Corrosion in concrete sewers is caused by______________?
- A. septic conditions B. dissolved oxygen C. chlorine D. nitrogen...
- The slope of sewer shall be__________________?
- A. given in the direction of natural slope of ground B. given in the direction opposite to natural slope of ground C. zero D. steeper than 1 in 20...
- The overflow rate for plain sedimentation tanks is about__________________?
- A. 500 to 750 litres/hour/ m2 B. 1000 to 1250 litres/hour/ m2 C. 1250 to 1500 litres/hour/m2 D. 1500 to 2000 litres/hour/m2...
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