Chemistry - Environmental Chemistry Question with Solution | TestHub
ChemistryEnvironmental ChemistryWater PollutionMedium2 minQB
ChemistryMediumsingle choice
Passage / Comprehension
The hardness of natural water is generally caused by presence of bicarbonates, chlorides and sulphates of calcium and magnesium but infact soluble salts that form a scum with soap cause hardness. Hardness of water is two types : (1) temporary hardness. (2) permanent hardness.
In ion exchange resin, cation of hardness producing salt is removed, now the obtained water is not fit for the drinking purpose due to the -
Options:
Answer:
A
Solution:
In the ion exchange resin process, hardness-causing cations like Ca²⁺ and Mg²⁺ are removed from water.
The cation exchange resin releases H⁺ ions in place of metal ions.
Due to the presence of excess H⁺ ions, the water becomes acidic in nature.
Hence, the obtained water is not fit for drinking due to acidic impurities.
Stream:JEESubject:ChemistryTopic:Environmental ChemistrySubtopic:Water Pollution
⏱ 2mℹ️ Source: QB
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