Interpretation: The separation technique that is based on stronger attraction is to be identified.
Concept introduction: The combination of two or more component in any ratio is termed as mixture. There are commonly four methods to separate the mixture of two compounds.
- Filtration
- Distillation
- Evaporation
- Chromatography

Answer to Problem 17STP
The separation technique that is based on stronger attraction is chromatography. Therefore, option (D) is the correct option.
Explanation of Solution
Reason for correct option: The separation method, which used to separate the component of mixture by passing through it in solution, is termed as chromatography. If the solution is in vapor phase, it is termed as gas chromatography. When mixture passes in the solution through a medium, the component in the mixture will move at different rates. The separation of component in the mixture via chromatography method is shown below.
- Spot the solution of mixture to one side of the chromatogram paper.
- Dip the chromatogram in the solution and leave the set up for some to time.
- When solution reaches to the top of the chromatogram, take out the chromatogram paper and spray visualizing agent on chromatogram. The different colored substance spread out.
Therefore, the technique that is based on stronger attraction is chromatography. Therefore, option (D) is the correct option.
Reason for incorrect option: The technique that is based on stronger attraction is chromatography. So, A, B, C and E are incorrect options.
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