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    What is ‘laughing gas’? 
    Question

    What is ‘laughing gas’? 

    A.

    Nitrous oxide 

    B.

    Nitric oxide

    C.

    Sulphur dioxide

    D.

    Hydrogen peroxide

    Correct option is A

    • The correct answer is (A) Nitrous oxide.
    • Nitrous oxide (N₂O) is commonly known as laughing gas due to its euphoric effects when inhaled.
    • It is a colorless, non-flammable gas with a slightly sweet odor and taste.
    • It is widely used in medicine and dentistry as an anesthetic and analgesic.

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