Which of the Following is Also Known as Laughing Gas?

  1. Nitrogen dioxide
  2. Nitrogen tetraoxide
  3. Nitrogen trioxide
  4. Nitrous oxide
Anurag Mishra Professor Asked on 24th November 2015 in Chemistry.
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    Answer is (4) Nitrous oxide

    Nitrous oxide is also known as Laughing gas.  It is mostly used in the food industry as well. It was identified by Josheph Priestley in 1772. 

    Monis Rasool Professor Answered on 24th November 2015.
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