Question:
Lime and soda are added to water to remove:
Lime and soda are added to water to remove:
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The lime-soda process effectively removes hardness by precipitating calcium and magnesium ions.
Updated On: Feb 27, 2025
- {Pathogens}
- {Iron}
- {Hardness}
- {Nitrates}
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: The lime-soda process is used for softening hard water by removing calcium and magnesium ions.
\[
{Ca}^{2+} + {Lime/Soda} \rightarrow {CaCO}_3 \downarrow
\]
\[
{Mg}^{2+} + {Lime} \rightarrow {Mg(OH)}_2 \downarrow
\]
Step 2: This process does not remove pathogens, iron, or nitrates.
Thus, the correct answer is (C) Hardness.
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