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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Q. In cases where differentiation is required between very similar substances, which of the following techniques making use of quadrupole principle is preferred?

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Q. In pyrolysis spectrometry, heating is done until which of the following is reached?

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Q. Which of the following is used to cool the ion source?

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Q. In quadrupole mass spectrometer, the ratio u/v is mass dependent, where ‘u’ is the DC voltage and ‘v’ is the peak amplitude.

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Q. When a value of q is kept constant, the value of m/e is proportional to which of the following when ‘m’ is the mass number, ‘e’ is the electric charge, ‘u’ is the DC potential, ‘v’ is the peak amplitude and ‘f’ is the frequency?

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Q. Which of the following is not an ion transducer or detector?

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Q. Which of the following is similar to photo multiplier transducer?

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