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प्रश्न
What change will you observe if you test soap solution with a litmus paper (red and blue)? Give reason for your observation.
कारण सांगा
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उत्तर
Soap is the salt of a strong base (sodium hydroxide) and a weak acid (carboxylic acid); therefore, it's solution with water will be also basic in nature. Hence, it will turn a red litmus paper blue.
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