Science MCQ Question
विज्ञान ऑनलाइन मॉक टेस्ट
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#1. Which gas is known as “Laughing gas”?
Explanation: Nitrous oxide (N₂O) produces a mild anesthetic and a feeling of laughter.
#2. The instrument used to measure atmospheric pressure is:
Explanation: Barometers measure air pressure; mercury and aneroid types are common.
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