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JEE Main levelSingle correct optionDifficulty 2 of 3mt075

In the reduction carried out near 1673 K, zinc is obtained as vapour that is condensed, because

  1. Azinc oxide sublimes at this temperature
  2. Bthe boiling point of zinc (about 1180 K) is lower than the working temperature
  3. Czinc forms a volatile carbide
  4. Dthe melting point of zinc is above 1673 K

Answer: B

At 1673 K the metal produced is above its boiling point of about 1180 K, so it leaves as vapour. It is then rapidly cooled and collected as zinc dust or liquid, preventing re-oxidation by .
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