Chapter 19: Chromatography

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1. What is chromatography mainly used for?

A Mixing substances

B Separating components of a mixture

C Heating substances

D Measuring temperature

2. Which paper is commonly used in paper chromatography?

A Filter paper

B Newspaper

C Plastic sheet

D Carbon paper

3. Which ink component travels the farthest?

A Most adsorbed

B Least soluble

C Most soluble in solvent

D Darkest colour

4. Which chromatography gives better separation than paper chromatography?

A Thin-layer chromatography

B Distillation

C Filtration

D Evaporation

5. Rf value has no units because it is:

A A mass

B A ratio

C A time

D A force

6. Which solvent property is important in chromatography?

A Colour

B Polarity

C Density only

D Odour

7. What acts as stationary phase in paper chromatography?

A Water trapped in paper fibers

B Ink

C Solvent

D Air

8. Which factor affects separation in chromatography?

A Boiling point

B Affinity for stationary phase

C Density only

D Mass of solute

9. Which chromatography is faster?

A Paper chromatography

B Thin-layer chromatography

C Distillation

D Filtration

10. Which type of chromatography uses silica gel?

A Paper chromatography

B Thin-layer chromatography

C Gas chromatography

D Column chromatography

Chapter 19: Chromatography

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