Analytical Chemistry Quiz

Which chromatography technique uses a solid-liquid form with a polar absorbent as the stationary phase?

• Thin layer chromatography (TLC)

• Fourier-transform infrared spectroscopy (FTIR)

• High performance liquid chromatography (HPLC)

• Gas chromatography (GC)

What is the main advantage of thin layer chromatography (TLC)?

• Simple and quick

• Complex

• Costly

• Highly accurate

What is the measure of the time taken for a solute to pass through a chromatography column in high performance liquid chromatography (HPLC)?

• Chromatogram

• Area under a peak [peak area count]

• Relative retention time (RRT)

• Retention time (RT)

Which chromatography technique can be used to separate volatile organic compounds?

• Thin layer chromatography (TLC)

• High performance liquid chromatography (HPLC)

• Gas chromatography (GC)

• Fourier-transform infrared spectroscopy (FTIR)

What is the main advantage of gas chromatography (GC)?

• Highly accurate

• Quick and efficient

• Costly

• Inexpensive

Which method is used for the characterization and identification of compounds or functional groups present in an unknown mixture of plants extract?

• High performance liquid chromatography (HPLC)

• Thin layer chromatography (TLC)

• Gas chromatography (GC)

• Fourier-transform infrared spectroscopy (FTIR)

What is the result of the Wagner test for secondary metabolites?

• Brownish-red precipitate

• Pink red or red coloration of the solution

• Yellow precipitate

• No change in color

What is the result of the Shinoda test for alkaloid?

• No change in color

• Pink red or red coloration of the solution

• Brownish-red precipitate

• Yellow precipitate

Which test is used to identify flavonoid?

• Fehling's test

• Shinoda test

• Wagner test

• Molisch test

What is the main difference between chromatography and non-chromatography methods?

• Cost

• Complexity

• Separation technique

• Detection method