Water MID I model objective question

Front

Disinfection action of bleaching powder is due to:

Back

A) HOCl (hypochlorous acid)

Front

Cation exchange resin regeneration method?

Back

HCl (B)

Front

Binding sites on EDTA

Back

6

Front

Permanent hardness of water is due to:

Back

Cl⁻

Front

Functional groups in anion exchange resin membranes:

Back

Acidic

Front

Hardness of water is expressed in terms of ____________

Back

CaCO3

Front

Salt responsible for caustic embrittlement:

Back

Na2CO3

Front

Phosphate salt for treating acidic water:

Back

Na2HPO4

Front

Method not used for water disinfection:

Back

Electrodialysis

Front

Caustic embrittlement is caused by NaOH.

Back

Correct Answer: NaOH (B)