Which of the following absorbs the impurities of the color and dissolves the solution? 

This question was previously asked in
RPF SI (2018) Official Paper (Held On : 11 Jan 2019 Shift 2)
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  1. Aluminum
  2. Hydrogen 
  3. Potassium Chloride
  4. Animal Charcoal

Answer (Detailed Solution Below)

Option 4 : Animal Charcoal
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Detailed Solution

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Key Points

  • Animal Charcoal is used to absorb impurities from color solutions, making them clearer.
  • It works effectively due to its high porosity and surface area, which allows it to adsorb a wide range of impurities.
  • Commonly used in the sugar refining industry and water purification processes to remove colors and undesired particles.
  • Animal Charcoal is preferred for its natural origin and efficiency in adsorbing non-polar substances, including organic chemicals.

Additional Information

Option Details
1) Aluminum Used in a wide range of industries for its strength and lightweight properties, not for absorbing impurities in solutions.
2) Hydrogen A gas element, vital in various chemical reactions but not used for absorbing impurities in color solutions.
3) Potassium Chloride Used mainly as a fertilizer, in medicine, and in scientific applications, not for absorbing impurities in solutions.
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