Spectroscopy Which of the following relationships between absorbance and %transmittance is incorrect? A = 2 - log10 %T A = log10 1 / T A = log10 100 / %T All are correct A = 2 - log10 %T A = log10 1 / T A = log10 100 / %T All are correct ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following components of a monochromator is the dispersing element? The entrance slit The diffraction grating None of these The collimating lens The entrance slit The diffraction grating None of these The collimating lens ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Why is it generally preferable to use absorbance as a measure of absorption rather than % transmittance? None of these Because %T is dependant on the power of the incident radiation Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T cannot be measured as accurately as absorbance None of these Because %T is dependant on the power of the incident radiation Because absorbance is proportional to the concentration of the analyte, whereas %T is not Because %T cannot be measured as accurately as absorbance ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Which of the following will oscillate the fastest? A small mass on a stiff spring A large mass on a stiff spring A small mass on a weak spring A large mass on a weak spring A small mass on a stiff spring A large mass on a stiff spring A small mass on a weak spring A large mass on a weak spring ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy Molar absorbtivities of compounds exhibiting charge transfer absorption are moderate small none of these large moderate small none of these large ANSWER DOWNLOAD EXAMIANS APP
Spectroscopy UV-Vis spectroscopy of organic compounds is usually concerned with which electronic transition(s)? none of these n → π* and π → π* n → σ* σ → σ* none of these n → π* and π → π* n → σ* σ → σ* ANSWER DOWNLOAD EXAMIANS APP
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