HPLC GC Quiz

HPLC: What type of material is most commonly used in microscale beads?

• Aluminum

• Silica

• Sodium Sulfate

• Titanium

GC: How large can molecules be at most?

• 5000 Daltons

• 10000 Daltons

• 150 Daltons

• 1000 Daltons

HPLC: Is chromatography resin part of the mobile or the stationary phase?

• Mobile Phase

• Stationary Phase

HPLC: What size of microscale beads allow for the most surface area?

• Large Beads

• Small Beads

GC: Why are carboxylic acid groups bad for GC?

• They corrode the GC

• They create assymetrical peaks

• They explode inside the GC

• They can't be detected by the GC

HPLC: What quantity describes the amount of a component present in a mixture analyzed by HPLC?

• Retention Time

• Area under the Peak

• Temperature

• Solvent

GC: What does the term isothermal mean?

 

 

• The temperature changes inside the column

• The temperature stays the same inside the column

HPLC is an adaptation of what type of chromatography?

• Gas Chromatography

• Column Chromatography

• Paper Chromatography

• Hydrophobic Chromatography

What type of HPLC instrument is used to separate components of a mixture for later use?

• Analytical

• Preperative

 GC: Why must the detector be hotter than the column?

• To prevent fire

• To prevent damage to the instrument

• To prevent condensation

• To prevent samples from reacting