Gas Chromatography Quiz

What is Gas Chromatography?

• A technique used for separating compounds in a mixture using heat

• An analytical technique applicable only to solid samples

• A technique applicable only to liquid samples

• An analytical technique applicable to gas, liquid, and solid samples

What serves as the mobile phase in Gas-Liquid Chromatography?

• Nitrogen

• Helium

• Methanol

• Water

What is the function of the chromatographic column in Gas Chromatography?

• To provide a location for physically retaining the stationary phase

• To generate a signal based on the properties of the component

• To carry the molecules of the analyte through the heated column

• To adjust the flow rate of the carrier gas

What is the composition of capillary columns in Gas Chromatography?

• Aluminum

• Copper

• Stainless steel

• Fused silica coated with a protective polymer

What is the purpose of the detector in Gas Chromatography?

• To generate a signal based on the properties of the component

• To adjust the flow rate of the carrier gas

• To provide a quantitative measurement of the components of the mixture

• To provide a location for physically retaining the stationary phase

What is the ideal carrier gas used in Thermal Conductivity Detector?

• Carbon Dioxide

• Oxygen

• Helium

• Methane

What does Flame-ionization detection (FID) detect in Gas Chromatography?

• The amount of nitrogen in a sample

• The amount of carbon in a sample

• The amount of oxygen in a sample

• The amount of hydrogen in a sample

What type of compounds does Electron Capture Detector (ECD) respond to?

• Neutral analyte molecules

• Electronegative analyte molecules

• Electropositive analyte molecules

• Acidic analyte molecules

How is Gas Chromatography used in the pharmaceutical industry?

• To analyze compounds for radioactive elements

• To analyze compounds for trace contaminants

• To analyze compounds for heavy metals

• To analyze compounds for chiral compounds

What is the application of Gas Chromatography in the food and beverage industry?

• To measure components such as nitrogen and phosphorus

• To measure components such as heavy metals and radioactive elements

• To measure components such as carbon and hydrogen

• To measure components such as fatty acids, vitamins, and dietary additives