Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? Because %T cannot be measured as accurately as absorbance Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T is dependant on the power of the incident radiation None of these Because %T cannot be measured as accurately as absorbance Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T is dependant on the power of the incident radiation None of these ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Molar absorbtivity is the measure of the None of these amount of light absorbed per unit length amount of light absorbed per unit concentration amount of light reflected and absorbed per unit concentration None of these amount of light absorbed per unit length amount of light absorbed per unit concentration amount of light reflected and absorbed per unit concentration ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following components of a monochromator is the dispersing element? The collimating lens The entrance slit None of these The diffraction grating The collimating lens The entrance slit None of these The diffraction grating ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following will oscillate the fastest? A small mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring A large mass on a weak spring A small mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring A large mass on a weak spring ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy 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 absence of broad spectrum of wavelenth None of these light is faster today that it used to be the Fourier Transfer Algorithm allows us to scan all frequencies at once absence of broad spectrum of wavelenth None of these light is faster today that it used to be the Fourier Transfer Algorithm allows us to scan all frequencies at once ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? n → π* and π → π* σ → σ* none of these n → σ* n → π* and π → π* σ → σ* none of these n → σ* ANSWER DOWNLOAD EXAMIANS APP
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