Spectroscopy
Vibrational spectroscopy is

an Infrared spectroscopy
a class of spectroscopic techniques which analyzes molecular motions
a large mass on a weak spring
a flashlight through a prism and shake it

ANSWER DOWNLOAD EXAMIANS APP

Spectroscopy
Why are rotational transitions of little use to a spectroscopist?

Because rotational transitions are extremely rare
Because the energy required to induce a rotational transition is so small that it cannot be measured
Because, in liquids and solids, spectral lines corresponding to rotational transitions are broadened as the result of molecular collisions and other interactions
All of these

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
the Fourier Transfer Algorithm allows us to scan all frequencies at once
light is faster today that it used to be
None of these

ANSWER DOWNLOAD EXAMIANS APP

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

Because amount of energy the lamp emits is proportional to the fourth power of the operating voltage
Because the lamp will only function at a specific voltage
Because if it wasn't, the lamp would bum out
All of these

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Spectroscopy