Which gas is known as ‘laughing gas’?

Topic: Competitive Exams
Subtopic: General Awareness

AOxygen

BNitrous Oxide

CCarbon Dioxide

DHelium

Explanation

Nitrous oxide ($N_2O$) is a colorless gas used in medicine and dentistry as an anesthetic and analgesic, often causing euphoric effects when inhaled.

Exam Relevance

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