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Subject - Chemistry:

Basics

MCQ - 135-2321

Question:

In contact process As2 O3 impurities are removed

  1. By adding H2 O
  2. By treating with Fe(OH)3
  3. In scrubbing tower
  4. By treating with Fe(OH)3

Correct Answer: B

Explanation:

In contact process As2 O3 impurities are removed in arsenic purifier which contain precipitated Fe(OH)3 that absorbs As2 O3.

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645 MCQ for effective preparation of the test of Basics of Chemistry section.

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