Chromatography

utilizes a stationary and a mobile phase to separate mixtures based on their affinity for each phase.

• filtration

• chromatography

• distillation

• osmosis

The diagram below shows a chromatogram obtained when a sample X was analysed together with four other known dyes P, Q, R and S. Dye Q was known to cause cancer. Which of the following dye(s) is/are safe for use?

• P only

• S only

• P and S

• P and X

Tags

NGSS.MS-PS1-2

The mobile phase in paper chromatography is typically a

• plasma

• solid

• gas

• liquid

The most soluble of these colors is

• red

• blue

Tags

NGSS.MS-PS1-2

In the image, which dye is the most soluble?

• Red

• Blue

• Purple

In the image, which dye is the least soluble?

• Red

• Blue

• Purple

Tags

NGSS.MS-PS1-2

The substance in the mixture that has the greatest affinity for the mobile phase will travel

• fastest

• slowest

Which component in chromatography is responsible for moving the sample through the stationary phase?

• Mobile phase

• Stationary phase

• Detector

• Sample injector

In thin-layer chromatography (TLC), what is the stationary phase typically made of?

• Silica gel

• Water

• Ethanol

• Acetone

What is the primary purpose of chromatography in scientific research?

• To separate mixtures

• To measure temperature

• To calculate density

• To determine pH