Q. Which of the following is an ion optic device in which ions pass through a mirror and their flight is reversed?

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Q. Which of the following statements about mass spectrometers are not true?

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Q. Which of the following is placed just before the detector in a radiofrequency mass spectrometer?

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Q. Which of the following is applied in one or more stages where each stage is a series of three equally spaced parallel grids?

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Q. The alternating voltage rf voltage is applied to which of the following?

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Q. The rf spectrometer contains a magnet.

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Q. The DC ion accelerating voltage is swept from _________

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Q. The resolution of the Bennet tube can be improved by using which of the following?

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Q. In Bennet spectrometer, the rf voltage has a fixed frequency.

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Q. The spurious lines can be reduced to a minimum by using which of the following?

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Q. Which of the following is the disadvantage of using three stage tubes?

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Q. Which of the following is not the feature of Bennet type spectrometer?

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Q. The resolving power of Bennet type spectrometer is primarily based on which of the following?

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Q. Which of the following is not a feature of quadrupole mass spectrometer?

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Q. Which of the following is not a component of quadrupole mass filter?

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Q. The mass selection scheme uses a dc potential and not a radio frequency potential.

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Q. If to one pair of electrodes one potential with one sign is applied, which of the following is applied to the other pair of electrodes?

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Q. Which of the following is the heart of quadrupole instrument?

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Q. Which of the following has to be done to increase the resolution of the quadrupole mass spectrometer?

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Q. Which of the following does not affect the resolution of the instrument?

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