Question

We should not keep curd, pickle, vinegar in the utensils of:
Iron, aluminium or copper?

Answer 1

Answer:

Curd = lactic acid

pickle = vinegar , oil

vinegar = acetic acid

These acids when kept with metals =

metal + acid = salt + hydrogen gas

so these salts in these containers are poisonous and unhealthy for our body and could case our death.