Which is usually prior to reverse osmosis?

Out of the below given methods which of these produce an odour?

Which type of mixers are used to mix coagulants like alum, ferric ammonium sulphate and coagulant aids such as polyelect…

Unit operations are the __ operations to remove the impurities.

Hydrolysis of chlorine in water has a rate constant of 11 s-1. What does this imply?

Which type of reactor is not used for oxidation?

Out of the below given methods which of these have the lowest capital cost?

Sludge treatment helps is reducing treatment costs.