Spectroscopy, Chromatography Multiple Choice Questions
Authored by Hong Luyen Le
Chemistry
University
Used 12+ times
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53 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The more commonly used chromatographic technique:
Liquid chromatography
Gas chromatography
Thin layer chromatography
Partition chromatography
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In infrared spectroscopy, C-H bonds normally absorb at______than C-C bonds
Longer wavenumber and higher intensity
Longer wavenumber and lower intensity
Shorter wavenumber and higher intensity
Shorter wavenumber and lower intensity
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which type of ionization source can be more useful for the identification of molecular structure?
Electrospray ionization
Electron impact ionization
Matrix assisted laser desorption ionization
Atmospheric pressure chemical ionization
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the most common application of UV-Vis spectroscopy
To determine the pKa of a molecule
To be used as a detector for chromatographic techniques
To separate compounds in a mixture
To determine the protein concentration
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The principle of UV-Vis spectroscopy is based on
The oscillation of the atoms around the bonds
The electronic transition of the electrons in the atoms
The magnetic field created by the spins of the atoms
The absorption of the light of the molecule
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which type of ionization source can be considered extensive source?
Electrospray ionization
Electron impact ionization
Matrix assisted laser desorption ionization
Atmospheric pressure chemical ionization
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The pKa of OH group in para-aminophenol A is 8. In which phase is this compound is extracted when the pH of aqueous solution is 10?
In chloroform
In aqueous phase
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