Chromatography Required practical Quiz

What does chromatography mean?

• Color writing

• Color separation

• Material writing

• Material separation

What are the two phases in chromatography?

• Solid phase and liquid phase

• Mobile phase and stationary phase

• Active phase and passive phase

• Polar phase and nonpolar phase

Why is it important to use pencil for drawing the baseline on the chromatography paper?

• The pencil is insoluble

• To make the baseline more visible

• To improve the separation process

• To ensure accurate measurements

What is the purpose of the mobile phase in chromatography?

• To dissolve the colors in the food dye

• To keep the colors stationary on the paper

• To measure the distance traveled by the colors

• To prevent the colors from mixing

What is the stationary phase in chromatography?

• The chromatography paper itself

• The food coloring dots on the paper

• The glass rod holding the paper

• The water in the beaker

What does the RF value measure in chromatography?

• The solubility of the colors in the solvent

• The affinity of the colors for the mobile phase

• The distance traveled by the colors

• The distance traveled by the solvent

How is the RF value calculated for a specific color?

• By multiplying the distance traveled by the color with the distance traveled by the solvent

• By dividing the distance traveled by the color by the distance traveled by the solvent

• By adding the distance traveled by the color to the distance traveled by the solvent

• By subtracting the distance traveled by the color from the distance traveled by the solvent

What does the separation of colors in chromatography depend on?

• The type of capillary tube used

• The size of the color dots

• The temperature of the solvent

• The affinity of the colors for the stationary phase

What is the independent variable?

• The solvent

• The distance the ink has travelled

• The ink

What is the dependent variable?

• The solvent

• The distance the ink has travelled

• The ink