MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
For fluoride electrode, the electrode response curve will not only shift but will change slope with changes in temperature. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Crystal membrane of ion selective electrode can be regenerated by washing with which of the following? |
| A. | Alcohol |
| B. | Iodine solution |
| C. | Acidic solution |
| D. | Basic solution |
| Answer» B. Iodine solution | |
| 3. |
Which of the following causes main interference in Fluoride electrode? |
| A. | H+ ions |
| B. | OH– ions |
| C. | Li+ ions |
| D. | Cl– ions |
| Answer» C. Li+ ions | |
| 4. |
What does TISAB which is used to overcome interferences stand for? |
| A. | Total Isolation Strength Absolute Buffer |
| B. | Total Ionic Strength Absolute Buffer |
| C. | Total Ionic Strength Adjustment Buffer |
| D. | Total Isolation Strength Adjustment Buffer |
| Answer» D. Total Isolation Strength Adjustment Buffer | |
| 5. |
In fluoride ion electrode, the potential corresponding to level of the fluoride ion is described by which of the following equations when E is the measured electrode potential, Eo is the reference potential and A is the level of fluoride ions in solution? |
| A. | E=Eo+0.0591 log A |
| B. | E=Eo-0.0591 log A |
| C. | E=Eo+0.0896 log A |
| D. | E=Eo-0.0896 log A |
| Answer» C. E=Eo+0.0896 log A | |
| 6. |
WHICH_OF_THE_FOLLOWING_CAUSES_MAIN_INTERFERENCE_IN_FLUORIDE_ELECTRODE??$ |
| A. | H<sup>+</sup> ions |
| B. | OH<sup>–</sup> ions |
| C. | Li<sup>+</sup> ions |
| D. | Cl<sup>–</sup> ions |
| Answer» C. Li<sup>+</sup> ions | |
| 7. |
For fluoride electrode, the electrode response curve will not only shift but will change slope with changes in temperature.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Crystal_membrane_of_ion_selective_electrode_can_be_regenerated_by_washing_with_which_of_the_following?$ |
| A. | Alcohol |
| B. | Iodine solution |
| C. | Acidic solution |
| D. | Basic solution |
| Answer» B. Iodine solution | |
| 9. |
What is the full form of TISAB Which Is Used To Overcome Interferences in Ammonia Fluoride? |
| A. | Total Isolation Strength Absolute Buffer |
| B. | Total Ionic Strength Absolute Buffer |
| C. | Total Ionic Strength Adjustment Buffer |
| D. | Total Isolation Strength Adjustment Buffer |
| Answer» D. Total Isolation Strength Adjustment Buffer | |
| 10. |
In fluoride ion electrode, the potential corresponding to level of the fluoride ion is described by which of the following equations when E is the measured electrode potential, Eo is the reference potential and A is the level of fluoride ions in solution? |
| A. | E=E<sub>o</sub>+0.0591 log A |
| B. | E=E<sub>o</sub>-0.0591 log A |
| C. | E=E<sub>o</sub>+0.0896 log A |
| D. | E=E<sub>o</sub>-0.0896 log A |
| Answer» C. E=E<sub>o</sub>+0.0896 log A | |
| 11. |
The performance of ammonia electrode is not affected by sample colour and turbidity. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Which of the following factors does not the reproducibility of the ammonia electrode? |
| A. | Temperature |
| B. | Drift |
| C. | Noise |
| D. | Dilution |
| Answer» E. | |
| 13. |
The dilution of solution must not reduce the level of ammonia below _________ |
| A. | 10<sup>-2</sup> M |
| B. | 10<sup>-5</sup> M |
| C. | 10<sup>-8</sup> M |
| D. | 10<sup>-9</sup> M |
| Answer» B. 10<sup>-5</sup> M | |
| 14. |
How can samples above 1M in ammonia concentration be measured using ammonia electrode? |
| A. | It must be diluted and measured |
| B. | It cannot be measured |
| C. | The electrode has to be modified for measuring |
| D. | It can be measured directly |
| Answer» B. It cannot be measured | |
| 15. |
When electrode potential response is plotted as a function of ammonia concentration on a semi-log graph, the graph obtained will be ____________ |
| A. | A straight line |
| B. | Parabolic |
| C. | Sigmoidal |
| D. | A curve |
| Answer» B. Parabolic | |
| 16. |
In Ammonia electrode, diffusion of dissolved ammonia occurs through the membrane until which of the following conditions occur? |
| A. | Concentration becomes equal on both sides |
| B. | Activity becomes equal on both sides |
| C. | Partial pressure becomes equal on both sides |
| D. | Differential pressure is low |
| Answer» D. Differential pressure is low | |