Related Questions

Removal of __________ is accomplished by aeration of water.
A Dissolved gases
B Suspended solids
C Dissolved solids
D None of these
Disinfection of water is done to destroy pathogenic bacteria and thus prevent water-borne diseases. Disinfection of water may be done by the use of
A Ozone and iodine
B Chlorine or its compounds
C Ultraviolet light for irradiation of water
D All of the above
Disinfection of drinking water, is done to remove
A odour
B bacterias
C turbidity
D colour
Disinfection of water is done to remove
A Color
B Bad taste
C Foul odour
D Bacteria
একটি পানিপূর্ণ কুয়ার গভীরতা 20m ও ব্যাস 2 m. কুয়াটিকে পানি শূণ্য করার জন্য 5 HP এর একটি পাম্প লাগানো হল। অর্ধেক পানি তোলার পর পাম্পটি নষ্ট হয়ে গেল। বাকি পানি তোলার জন্য একই ক্ষমতা সম্পন্ন আর একটি পাম্প লাগানো হল। প্রথম পাম্প দ্বারা সম্পাদিত কাজের পরিমান নির্ণয় কর।(The depth and diameter of a water filled well are 20 m and 2 m respectively. An engine of 5 HP is attached to pump out the water. The pump was ruined after emptying half of the water. Then another pump of same capacity was attached to pump out rest of the water. Determine the work done by first pump.) 
A 2.54 × 104 J
B 1.44 × 104 J
C 2.34×104 J
D 1.54 × 104 J
E 1.54 ×104 J
In water treatment plant, zeolite process is used to remove the __________ of water.
A Acidity
B Alkalinity
C Hardness
D Iron & zinc
A sink contains exactly 12 liters of water. If water is drained from the sink until it holds exactly 6 liters of water less than the quantity of water drained away, how many liters of water were drained away ?
A 2
B 3
C 9
D 6
A pump remover's water at a rate of 6 gallons per minute . How many hours will it take to remove 1800 gallons?
A 4 hours
B 5 hours
C 3 hours
D 6 hours
In water treatment, rapid gravity filters are adopted to remove
A Dissolved organic substances
B Dissolved solids and dissolved gases
C Floating solids and dissolved inorganic solids
D Bacteria and colloidal solids
Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
A canal fall
B canal outlet
C canal escape
D canal regulator

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