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| Q. |
Which of the following gases is known as “Laughing Gas”? |
| A. | Nitrous oxide |
| B. | Nitrogen peroxide |
| C. | Nitrogen |
| D. | Nitric oxide |
| Answer» A. Nitrous oxide | |
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Explanation: Nitrous oxide (N2O) is commonly known as laughing gas. It is used in surgery and dentistry for its anaesthetic and analgesic effects. It is known as "laughing gas" due to the euphoric effects of inhaling it, a property that has led to its recreational use as a dissociative anaesthetic. |
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