MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 20 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. |
Given below is a diagram of Scintillation detector. Identify the unmarked component. |
| A. | Lens |
| B. | Collimator |
| C. | Dynodes |
| D. | Focussing cup |
| Answer» D. Focussing cup | |
| 2. |
Given below is the block diagram of proportional counter. Identify the unmarked component. |
| A. | Collimator |
| B. | Detector crystal |
| C. | Pre-amplifier |
| D. | Position logic circuit |
| Answer» D. Position logic circuit | |
| 3. |
Liquid samples must be counted using ionization chamber by placing them in which of the following? |
| A. | Test tube |
| B. | Curvette |
| C. | Ampoules |
| D. | Flask |
| Answer» D. Flask | |
| 4. |
Which of the following materials are used as the insulation between the inner and outer electrodes of the ion chamber? |
| A. | Polythene |
| B. | Plastic |
| C. | Polytetrafluoroethylene |
| D. | Polyacrylamide |
| Answer» D. Polyacrylamide | |
| 5. |
When X-ray enters the solid state detector it produces ion pair rather than electron-hole pair. |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of the following gases are used in the proportional counter as the ionising gas? |
| A. | Alcohol |
| B. | Argon gas |
| C. | Krypton |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 7. |
Which of the following acts as ionising gas in Geiger Muller counter? |
| A. | Alcohol |
| B. | Argon gas |
| C. | Krypton |
| D. | Hydrogen |
| Answer» C. Krypton | |
| 8. |
‘When nuclear radiations pass through, gas ionization is produced.’ This is the principle of which of the following detectors? |
| A. | Proportional counter |
| B. | Flow counter |
| C. | Geiger Muller counter |
| D. | Scintillation counter |
| Answer» D. Scintillation counter | |
| 9. |
WHEN_X-RAY_ENTERS_THE_SOLID_STATE_DETECTOR_IT_PRODUCES_ION_PAIR_RATHER_THAN_ELECTRON-HOLE_PAIR.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
Liquid samples must be counted using ionization chamber by placing them in which of the following?$ |
| A. | Test tube |
| B. | Curvette |
| C. | Ampoules |
| D. | Flask |
| Answer» D. Flask | |
| 11. |
Which_of_the_following_materials_are_used_as_the_insulation_between_inner_and_outer_electrodes_of_the_ion_chamber?$ |
| A. | Polythene |
| B. | Plastic |
| C. | Polytetrafluoroethylene |
| D. | Polyacrylamide |
| Answer» D. Polyacrylamide | |
| 12. |
Liquid Scintillators are used for which of the following materials? |
| A. | Low energy beta materials |
| B. | High energy beta materials |
| C. | Low energy gamma materials |
| D. | High energy gamma materials |
| Answer» B. High energy beta materials | |
| 13. |
Gaseous compounds containing radioactive sources can be directly introduced into the ionization chamber. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
Scintillation detector is a large flat crystal of which of the following materials? |
| A. | Sodium chloride |
| B. | Sodium iodide |
| C. | Sodium sulphate |
| D. | Sodium carbonate |
| Answer» B. Sodium iodide | |
| 15. |
Which of the following is the main disadvantage of solid state semiconductor detector? |
| A. | Low accuracy |
| B. | Low sensitivity |
| C. | It should be maintained at low temperature |
| D. | High pressure has to be produced |
| Answer» D. High pressure has to be produced | |
| 16. |
Which of the following gases are used in proportional counter as the ionising gas? |
| A. | Alcohol |
| B. | Argon gas |
| C. | Krypton |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 17. |
Which of the detectors is similar to Geiger Muller counter in construction but is filled with heavier gas? |
| A. | Proportional counter |
| B. | Flow counter |
| C. | Semiconductor detector |
| D. | Scintillation counter |
| Answer» B. Flow counter | |
| 18. |
Which of the following acts as quenching gas in Geiger Muller counter? |
| A. | Alcohol |
| B. | Argon gas |
| C. | Krypton |
| D. | Hydrogen |
| Answer» B. Argon gas | |
| 19. |
‘When nuclear radiations pass through, gas ionization is produced.’ This is the principle of which of the following detectors?$ |
| A. | Proportional counter |
| B. | Flow counter |
| C. | Geiger Muller counter |
| D. | Scintillation counter |
| Answer» D. Scintillation counter | |
| 20. |
Which of the following is not a type of radiation detectors? |
| A. | Geiger Muller counter |
| B. | Proportional counter |
| C. | Semiconductor detector |
| D. | Flame emission detector |
| Answer» E. | |