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प्रश्न
What happens when NaCl solution is added to a gold sol?
अति संक्षिप्त उत्तर
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उत्तर
When NaCl solution is added to a gold sol, it causes coagulation by neutralizing the charge on gold particles, leading to precipitation. This coagulation can be prevented by adding a protective colloid like gelatin, which stabilizes the sol.
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