MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Analytical Instrumentation knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The solute, while moving in the column is always in equilibrium with both the stationary phase and the mobile phase. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
It is more difficult to measure the width at half peak height than the base width in the detector output. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Which of the following equations give the expression for plate number, N when tR is the adjusted retention time and Wb is the width at the base of the peak which is equal to 4 standard deviations. |
| A. | 16 t<sub>R</sub><sup>2</sup>/W<sub>b</sub> |
| B. | 4 t<sub>R</sub><sup>2</sup>/W<sub>b</sub> |
| C. | (4t<sub>R</sub>/W<sub>b</sub>)<sup>2</sup> |
| D. | 4 (t<sub>R</sub>/W<sub>b</sub>)<sup>2</sup> |
| Answer» D. 4 (t<sub>R</sub>/W<sub>b</sub>)<sup>2</sup> | |
| 4. |
In gas-liquid chromatography, when films are used in the interior of the capillary column, then what is the value of Eddy diffusion? |
| A. | Greater than 1 |
| B. | Less than 1 |
| C. | Zero |
| D. | Less than zero |
| Answer» D. Less than zero | |
| 5. |
Which of the following is the expression for longitudinal diffusion in the column, if represents obstruction factor, dM represents particle diameter, DM represents Solute diffusion co-efficient and represents function for packing uniformity? |
| A. | d<sub>M</sub> |
| B. | 2 D<sub>M</sub> |
| C. | D<sub>M</sub> |
| D. | /d<sub>M</sub> |
| Answer» C. D<sub>M</sub> | |
| 6. |
Which of the following is the expression for Eddy diffusion in the column, if represents obstruction factor, dp represents particle diameter, DM represents Solute diffusion co-efficient and represents function for packing uniformity? |
| A. | d<sub>M</sub> |
| B. | 2 D<sub>M</sub> |
| C. | D<sub>M</sub> |
| D. | /d<sub>M</sub> |
| Answer» B. 2 D<sub>M</sub> | |
| 7. |
Which of the following is the distance that the solute moves while undergoing one partition? |
| A. | Retention distance |
| B. | Distribution constant |
| C. | Plate height |
| D. | Column packing length |
| Answer» D. Column packing length | |