A. Nitrous Oxide
B. Calcium Oxide
C. Chlomium Oxide
D. None
🧠 Explanation:
Laughing gas, known as nitrous oxide, is a colorless gas used in medical and recreational contexts. In dentistry and surgery, it serves as a mild anesthetic, reducing pain and anxiety. Its euphoric effects earned it the nickname “laughing gas.” Chemically stable, it’s also used in food processing and automotive industries. However, misuse can pose health risks. Nitrous oxide’s versatility highlights its importance in healthcare and industry, while its nickname reflects its unique effect on human behavior, making it a notable compound in both scientific and cultural contexts.
