Q. Which of the following materials are generally not used for the construction of filaments in thermal conductivity analyzers?

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Q. Thermistors have positive temperature-coefficient of resistance.

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Q. Which of the following is not the characteristic of thermistors used in thermal conductivity analyzers?

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Q. How can the high speed of response be obtained in thermal conductivity analyzers?

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Q. Which of the following bridges are used in thermal conductivity analyzers?

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Q. Which of the following is generally used as indicators in bridges in thermal conductivity analyzers?

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Q. Changes in the composition of gas stream give rise to changes in thermal conductivity of the gas stream.

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Q. Which of the following is the relationship between the density of ideal gas and its molecular weight?

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Q. Under which of the following conditions do all real gases behave as ideal gases to some extent?

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Q. Which of the following detectors are not used in analyzers based on gas density?

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Q. When would the recorder indicate a zero base line in analyzers based on gas density?

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Q. The use of thermistor eliminates the requirement for amplification.

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Q. In analyzers based on gas density, the unbalance of the bridge is linearly proportional to which of the following?

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Q. Which of the following bridges are used in analyzers based on gas density?

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Q. In analyzers based on gas density, if the sample carries a gas having a higher density than the detector which of the following occurs?

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Q. When hot-wires are used as detectors amplification is not required.

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Q. Which of the following is the effective sample volume in analyzers based on gas density?

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Q. Gases emit radiation under which of the following conditions which can be used for determination of gases?

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Q. Which of the following measuring technique is utilized for measuring nitrogen?

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Q. The characteristic emission of which colour, when discharge takes place in a low pressure chamber containing gas sample, will indicate the presence of nitrogen while using photospectrometer?

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