Question

. A student is separating the colours in a sample of black ink using paper chromatography. He puts a spot of black ink onto filter paper. He dips the filter paper into ethanol in a beaker. What is the name given to ethanol in this experiment? *

1 point

a. mobile phase

b. gas phase

c. solid phase

d. stationary phase

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Answer 1

Answer:

a this option is correct I know it very well

Answer 2

When the filter paper in an experiment is put into a beaker containing ethanol, it is called as mobile phase. Thus, the correct option is 'a'.

Detailed Explanation:

• The technique of separating the components from the mixture is called as chromatography.
• The process is used on the basis of amount of solute material on the mobile phase and the stationary phase.
• In chromatographic technique, stationary phase is the solid silica based phase whereas mobile phase is the liquid phase where the mixture dissolved.

Thus, when in the chromatography, filter paper having black spot of ink in it, is dipped into ethanol in a container, the ethanol is considered as a mobile phase.