State PCS PYQPrelims 2025

BPSC – Combined Competitive Examination · প্রশ্ন 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
উত্তর দেখান ও ব্যাখ্যা

উত্তর: (D) All of the above

ব্যাখ্যা

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

  • (A) ভুল

    Wrong: true, but the other reasons also apply.

  • (B) ভুল

    Wrong: true, but the other reasons also apply.

  • (C) ভুল

    Wrong: true, but the other reasons also apply.

  • (D) সঠিক

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