Analytical Instrumentation Practice Test 3

1. Amino-acids are distinguishable from each other only by one or two atoms in their structure.

2. Polarographic cells are used to measure the partial pressure of gases only in static gas monitoring systems and not in continuous streams.

3. Which of the following methods, is the widely used method for trace gas analysis?

4. In the gold film sensor, the change in resistance is proportional to the concentration of H₂S.

5. Polarographic cells used for measuring the partial pressure of oxygen are temperature-sensitive.

6. In solid state sensor, when heated to 150^o to 300^o which of the following occurs?

7. Which of the following detectors used in liquid chromatography is also called micro-adsorption detector?

8. In OXYMAT-M oxygen analyser which of the following is usually used as reference gas?

9. What is the drawback that occurs in using gas chromatography for amino-acid analysis?

10. During analysis of NO₂ using Chemiluminescent analyser, why is NO₂ not made to react with ozone directly?