How many methods of removing the radio active impurities are there?
a) 2
b) 3
c) 3
d) 4
Applied Chemistry
The treatment of water with _________ improves the taste of water
a) Oxygen
b) Chlorine
c) KMnO4
d) Ozone
Reacting the water with _________ removes the odour due to the phenols
a) KMnO4
b) MnO4
c) Potassium
d) Magnesium
__________ imparts peculiar odour to the water
a) Decaying organic matter
b) Detergents
c) Phenols
d) Dissolved oxygen
The unpleasant odour of the water is due to presence of the __________
a) Nitrogen
b) Bismuth
c) Phenols
d) Dissolved oxygen
Dried sludge can be used as _________
a) Fertilizer
b) Pesticide
c) Reagent
d) Medicine
In the trickling filter process, the _________ build up and they block the passage
a) Sludge formed
b) Dissolved impurities
c) Dissolved solids
d) Micro organisms
Periodic cleaning is used to _________
a) Increase efficiency
b) Decrease efficiency
c) Increase pressure
d) Decrease dissolved oxygen
The depth of the rectangular circular tanks in the trickling filters method is having the depth of ____________
a) 4m
b) 3m
c) 2m
d) 1m
Trickling filter method is ___________ than the activated sludge process
a) Fast
b) Slow
c) Very fast
d) Moderate