Which of the following is not a feature of carrier gas used in gas chromatography? a.It should be suitable for the detector employed b. It should not be completely pure c.It must be chemically inert d. It should be cheap
1. Which of the following is not a feature of carrier gas used in gas chromatography?
b.It should have proper insulation
c.Power consumption should be kept low
d.It must have maximum thermal gradients
4. The GC trace obtained after an experiment is called a
5. What useful information can be found from a Van Deemter plot?
Select one:
Optimum mobile phase flow rate
Optimum column length
Optimum column temperature
6. Which of these effects result from slow injection of a large sample volume?
Non-linear detector response
Increased resolution
c.
Constant resolution
Decreased resolution
The selectivity factor
Resolution is proportional to the
number of theoretical plates in a column
square of the number of theoretical plates in a column
cube root of the number of theoretical plates in a column
square root of the number of theoretical plates in a column
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