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because they could react with metals like brass and copper and may release some harmful acids and gases like hydrogen which is harmful for our health.
because it contains different ions which may conduct electricity.
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Sour substances should not be kept in brass and copper vessels because
1 The acid present in curd and other sour substances reacts with metal to form poisonous substances that can cause health problems.
2 When acids reacts with metals. it creates a pot holes in the vessel.
Distilled water donor conduct electricity but rain water does because rain water consists free ions that conducts electricity .
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