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State PCS PYQPrelims 2025

BPSC – Combined Competitive Examination · Question 136

Why is oil not stored in a galvanised iron pot?

  1. It produces a toxic compound
  2. It reduces the quality of oil
  3. Corrosion is observed
  4. All of the above
Show answer & explanation

Answer: (D) All of the above

Explanation

Galvanised iron is zinc-coated; acids in oil react with zinc, giving harmful compounds, off-flavours and corrosion.

  • (A) Incorrect

    Wrong: true, but the other reasons also apply.

  • (B) Incorrect

    Wrong: true, but the other reasons also apply.

  • (C) Incorrect

    Wrong: true, but the other reasons also apply.

  • (D) Correct

    Correct: fatty acids react with the zinc coating, forming toxic zinc compounds, spoiling the oil and corroding the pot.