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  • Inorganic Elements and their Compounds - 1
  • A student is provided with a solution of HNO3 and is aske...
Multiple choice

A student is provided with a solution of HNO3 and is asked to decolourise it. Which of the following available gases should he use to decolourise the acid?

  1. O2

  2. CO2

  3. SO2

  4. NO2

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

CO2 gas should be use to decolourise the nitric acid.

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