Q. For the separation of which of the following substances, Gas-solid chromatography is being used?

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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?

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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?

View solution