why curd and sour substances no be kept in copper brass?
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Curd and sour substances contain acid.They would react with the surface of metal vessels such as that of brass and copper to produce harmful substances. curd and sour things have acid in them. so they are sour.
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Why does curd & sour substance not be kept in brass & copper utensils?
The curd & sour substances contain some acid in them.
Copper & brass react with the acids to form certain salts which are poisonous in nature.
Therefore, curd & sour substances should not be kept in brass & copper utensils.
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