This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Gas commonly used in laparoscopy is: March 2004 
Select and explain. 
A. CO2, B. SO2, C. N2, D. O2
A: CO2
Answer: A: CO2 
Explanation: Ans. A i.e. CO2