Question

Which of the following is the disadvantage of nitrogen, which can be used as carrier gas in gas chromatography?

• A. Dangerous to use
• B. Expensive
• C. Reduced sensitivity
• D. Highly reactive

Hint:

Nitrogen = safe & cheap, but reduces sensitivity in GC.

Answer 1

The Correct Option is C

Although nitrogen is commonly used as a carrier gas in gas chromatography due to its inertness and availability, it has a major disadvantage: reduced sensitivity and slower analysis time compared to helium or hydrogen.