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प्रश्न
How will you distinguish between soft water and hard water?
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उत्तर
Hard water... is water that contains an appreciable quantity of dissolved minerals (like calcium and magnesium). Soft water is treated water in which the only ion is sodium. As rainwater falls, it is naturally soft. On the other hand, soft water tastes salty and is sometimes not suitable for drinking.
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संबंधित प्रश्न
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What do you understand by
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