Laughing-gas is the name given to

(a) Nitrous oxide
(b) Nitric oxide
(c) Nitrogen trioxide
(d) Nitrogen dioxide

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  • 2 Answer(s)


    sushil Default Answered on 4th May 2016.
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    Answer: (a) Nitrous Oxide 

    Anurag Mishra Professor Answered on 5th July 2016.
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