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. |
Total reflection X-ray fluorescence spectrometer is attractive for elements which lack reliable wet chemical methods. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
In computer-controlled corrective iteration method, which of the following is used to estimate absorption corrections? |
| A. | Initial raw intensity data |
| B. | Elemental composition |
| C. | Amount of sample |
| D. | Amount of radiation |
| Answer» B. Elemental composition | |
| 3. |
Computer-controlled corrective iteration is the only reliable method of matrix effects correction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The major problem associated with sample preparation is which of the following? |
| A. | Preparing sample in the right quantity |
| B. | Choosing sample holders |
| C. | Matrix effects |
| D. | Reflection by holders |
| Answer» D. Reflection by holders | |
| 5. |
Which of the following happens when a large solid angle is intercepted as the detector is placed close to the sample? |
| A. | Maximum efficiency increases |
| B. | Maximum efficiency decreases |
| C. | Efficiency is not affected |
| D. | Process response becomes fast |
| Answer» B. Maximum efficiency decreases | |
| 6. |
Which of the following devices are used as a detector? |
| A. | Thermistor |
| B. | Optical detector |
| C. | Solid state detector |
| D. | Golay cell |
| Answer» D. Golay cell | |
| 7. |
In total reflection X-ray fluorescence spectrometer, the specimen is excited by the primary X-ray beam at a grazing angle _______ the critical angle. |
| A. | Greater than |
| B. | Less than |
| C. | Equal to |
| D. | Which is a complement of |
| Answer» C. Equal to | |