Which of the following processes can remove both temporary as well as permanent hardness of water ?

Related Mcqs:

Presence of carbonaceous matter in the sewage____________________?

A. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures B. Reduces sulphate ions to sulphides causing obnoxious smell C. Increases the quantity of chlorine used for its purification D. All A, B. and C....

In an integrated steel plant, NH3 present in coke oven gas is normally recovered as_________________?

A. (NH4)2SO4 B. NH4Cl C. (NH4)2 NO3 D. Liquid NH3...

Which of the following is an ore of iron ?

A. Galena B. Chalcopyrite C. Hematite D. Bauxite...

Permanent hardness of water can be removed by____________________?

A. Simply boiling B. Adding alum C. Passing it through cation & anion exchangers D. All (A), B. and (C)...

Styrene is produced from ethyl benzene by the process of________________?

A. Dehydrogenation B. Oxidation C. Alkylation D. Dehydration...