Question

Identify the gas used in gas chromatography.

• A. Helium
• B. Argon
• C. Hydrogen
• D. Neon

Hint:

Helium and Argon are the most commonly used gases in gas chromatography as they are inert and provide high efficiency in separation.

Answer 1

The Correct Option is B

Step 1: Understanding gas chromatography.
Gas chromatography (GC) is an analytical technique used to separate and analyze gases or volatile compounds. In GC, an inert gas is used as the carrier gas. Argon is often preferred due to its inert nature.

Step 2: Analyzing the options.
(A) Helium: Helium is commonly used as a carrier gas in gas chromatography due to its low molecular weight and inertness.
(B) Argon: Correct — Argon is also used in gas chromatography, although helium is more common.
(C) Hydrogen: Hydrogen is used in some types of gas chromatography, but it is not as inert as helium or argon.
(D) Neon: Neon is not commonly used as a carrier gas in gas chromatography.

Step 3: Conclusion.
The correct answer is (B) Argon, though helium is more commonly used.