Q. Which of the following is used in magnetic wind instruments to determine the amount of oxygen?

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Q. Which of the following concepts are not used in magnetic wind instruments?

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Q. How are the hydrocarbons in the samples removed in magnetic wind instruments?

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Q. Which of the following bridges are used in magnetic wind instruments?

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Q. The extremely high inertia of the thin membrane in the oxygen sensor allows it to rapidly attain equilibrium.

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Q. Which of the following is not true about the galvanic method of oxygen analysis?

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Q. Which of the following is true about Hersch cell which is one of the arrangements of a galvanic cell?

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Q. Polarographic cells type of electrochemical method uses which of the following concepts?

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

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Q. In the conductometric method, the difference in gas conductivity before and after passing sample gas denotes which of the following?

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Q. Conductometric method is not very suitable for measuring traces of which of the following gases in ppb range?

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Q. Polarographic cells are not sensitive to which of the following gases?

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Q. In polarographic cell when potential is applied, oxygen is reduced at __________ when KCl is present.

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

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

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Q. Nitrogen dioxide can be detected with a paramagnetic analyser.

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Q. Nitrogen oxide cannot be directly analysed using UV and Visible analyzers due to which of the following reasons?

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Q. How is NO converted to NO₂ for analysis in UV and Visible analyzers?

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Q. How is NO converted to NO₂ for analysis in Chemiluminescent analyser?

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

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