Easy Chemistry Class 11 Level 5

Which ions are generally present in hard water?

कठोर जल में सामान्यतः कौन से ions होते हैं?

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Correct Answer

A. Ca2+ और Mg2+ / Ca2+ and Mg2+

Explanation

Step 1: Hard water does not easily form lather with soap. Step 2: Presence of calcium and magnesium ions is the main cause of hardness. Step 3: Remember Ca2+ Mg2+ for hard water.

Step 1: hard water soap के साथ आसानी से झाग नहीं देता। Step 2: इसमें calcium और magnesium ions की presence hardness का मुख्य कारण होती है। Step 3: hard water के लिए Ca2+ Mg2+ याद रखें।

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