Analytical Instrumentation Mock Test 2

10%

Question 1 of 10

1. Liquid chromatography can be performed in which of the following ways?

Only on plane surfaces

Either in columns or on plane surfaces

Neither in columns nor on plane surfaces

Only in columns

Question 1 of 10

Question 2 of 10

2. In gas-liquid chromatography, when films are used in the interior of the capillary column, then what is the value of Eddy diffusion?

Less than zero

Zero

Greater than 1

Less than 1

Question 2 of 10

Question 3 of 10

3. In chromatogram, the area under the peak can be used to determine which of the following?

Column resolution

Components of the sample

Amount of component in the sample

Column efficiency

Question 3 of 10

Question 4 of 10

4. Which of the following is not true about the radial compression column when compared to standard separation column?

Analysis time decreases

Solvent flow increases

Internal diameter decreases

Overall operating pressure decreases

Question 4 of 10

Question 5 of 10

5. Sample injection port must be maintained at a temperature at which rapid vapourisation occurs but thermal degradation does not occur.

True

False

Question 5 of 10

Question 6 of 10

6. In which of the following type of paper, chromatography does the mobile phase move horizontally over a circular sheet of paper?

Ascending – descending chromatography

Ascending paper chromatography

Descending paper chromatography

Radial paper chromatography

Question 6 of 10

Question 7 of 10

7. Which of the following is defined as the ratio of moles of solute in stationary phase to the moles of solute in the mobile phase?

Volumetric phase ratio

Total porosity

Distribution constant

Retention factor

Question 7 of 10

Question 8 of 10

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

High density

Reduced sensitivity

Expensive

Dangerous to use

Question 8 of 10

Question 9 of 10

9. Which of the following is the ratio of a length of column packing to retention time?

Relative migration rate

Average linear rate of mobile migration

Average linear rate of solute migration

Selectivity factor

Question 9 of 10

Question 10 of 10

10. Which of the following is not the advantage of thermal conductivity detector used in gas chromatography?

Large linear dynamic range

High sensitivity

Simple in construction

Non-destructive character

Question 10 of 10