2. Which is the most common carrier gas for gas chromatography? (a) helium (b) n

Question

2. Which is the most common carrier gas for gas chromatography? (a) helium (b) nitrogen (c) hydrogen 3. In a gas chromatography experiment using a non-polar stationary phase (a) solutes are eluted in order of increasing boiling point. (b) solutes are eluted in order of increasing vapor pressure. (c) solutes are eluted in order of increasing polarity. 4. You can improve the separation of components in gas chromatography by (a) raising the temperature of the injection port. (b) raising the temperature of the column isothermally. (c) raising the temperature of the column programmatically.

Explanation / Answer

2.(b) is correct since it is inert & cheapest

3. (c) is correct

4.(c) is correct

5.(b) is correct

6.(c) is correct

7.(b) is correct

8.(a) is correct

9.(c) is correct

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