Q. Which of the following is the disadvantage of hydrogen, which can be used as carrier gas in gas chromatography?

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Q. Which of the following is the disadvantage of helium, which can be used as carrier gas in gas chromatography?

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Q. Which of the following is the disadvantage of nitrogen, which can be used as carrier gas in gas chromatography?

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Q. Slow injection of large samples leads to band broadening and loss of resolution.

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Q. In which of the following methods are liquid samples injected into the column in gas chromatography?

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Q. What must be done to the solid samples for it to be introduced into the column without using solid injection syringes in gas chromatography?

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Q. Which of the following is the commonly used support material for the packed column in gas chromatography?

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Q. Which of the following is the advantage of a straight packed column?

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Q. Which of the following is the disadvantage of coiled or helical shaped packed chromatographic column?

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Q. Capillary columns are open tubular columns constructed from which of the following materials?

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Q. Sample injection port must be maintained at a temperature at which rapid vapourisation occurs but thermal degradation does not occur.

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Q. Which of the following is not a desirable feature of the ovens used in gas chromatography?

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Q. Which of the following is not an ideal characteristic of a detector used in gas chromatography?

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Q. Which of the following is not a type of detector used in gas chromatography?

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Q. Which of the following detectors have high sensitivity to all organic compounds?

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Q. Which of the following is not the advantage of thermal conductivity detector used in gas chromatography?

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Q. Which of the following detectors is widely used to detect environmental samples like chlorinated pesticides and polychlorinated biphenyls?

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Q. In which of the following detector is the eluent mixed with hydrogen and burned and then mixed with ozone and its intensity is measured?

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Q. Filter photometer detector is primarily responsive to which of the following compounds/elements?

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Q. Which of the following detector uses ultraviolet radiation from lamps to produce ionisation of solute molecules?

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