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Question

Write two reasons why curd and sour fruits are not kept in copper and brass vessels for a long time

WBBSE Class X Physical Science Metallurgy 02 Mark 2026

Answer

Curd and sour fruits contain acids. Therefore, they should not be kept in copper or brass vessels for a long time because:

  • The acids react with the metals present in the vessels and form metal salts.
  • These metal salts may be toxic and harmful to health, making the food unfit for consumption.

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