Multiple choice general knowledge science & technology

Which element is used as an antichlor?

  1. Nitrogen dioxide

  2. Hydrogen Sulphide

  3. Sulpher Dioxide

  4. Amonium Nitrate
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A Correct answer
Explanation

Nitrogen dioxide (NO2) is used as an antichlor in bleaching and textile processes because it acts as a reducing agent to neutralize excess chlorine. Hydrogen sulfide and sulfur dioxide are also reducing agents but are not typically called antichlors. Ammonium nitrate is an oxidizer, not an antichlor.

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