Q. Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance?

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Q. In the past, IR spectra had to be aquired one wavelength at a time, which took a long time. Today quick spectra is due to the

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Q. Which of the following is not an IR vibrational mode?

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Q. Which of the following will oscillate the fastest?

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Q. In the equation, A = ε bc, what quantity is represented by "ε"?

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Q. Why must the voltage supplied to a tungsten lamp be very stable?

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Q. Where does a carbonyl (C=0) stretch appear in an IR spectrum?

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Q. What is the relationship between wavelength and wave number?

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Q. In the intersystem crossing

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Q. Why must the radiation source for fluorescence spectrometry be more powerful than for absorption spectroscopy?

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Q. Why do fluorescence spectrometers often use double-beam optics?

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Q. For a molecule to absorb IR, why must the molecule's vibrations cause fluctuations in the dipole moment of the molecule?

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Q. Internal conversion is where

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Q. Why phosphorescence measurements are usually made at a low temperature?

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Q. Fluorescence occurs when

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Q. Thin layer chromatography is

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Q. In gas chromatography, the basis for separation of the components of the volatile material is the difference in

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Q. In reverse phase chromatography, the stationary phase is made

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Q. Ion exchange chromatography is based on the

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Q. The general expression for the appearance of a solute in an effluent is (where V is the elution volume of a substance , V0 void volume, kD distribution constant and Vi internal water volume)

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