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Which of the following methods is used to purify colloidal solutions? (2020)

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Question: Which of the following methods is used to purify colloidal solutions? (2020)

Options:

  1. Filtration
  2. Centrifugation
  3. Dialysis
  4. Evaporation

Correct Answer: Dialysis

Exam Year: 2020

Solution: 

Dialysis is used to purify colloidal solutions by allowing the solvent and small solutes to pass through a semi-permeable membrane while retaining the colloidal particles.

Which of the following methods is used to purify colloidal solutions? (2020)

Practice Questions

Q1
Which of the following methods is used to purify colloidal solutions? (2020)
  1. Filtration
  2. Centrifugation
  3. Dialysis
  4. Evaporation

Questions & Step-by-Step Solutions

Which of the following methods is used to purify colloidal solutions? (2020)
  • Step 1: Understand what a colloidal solution is. It is a mixture where tiny particles are dispersed in a liquid.
  • Step 2: Know that colloidal particles are larger than regular molecules but smaller than what can be seen with the naked eye.
  • Step 3: Learn about dialysis, which is a method used to separate substances in a solution.
  • Step 4: Recognize that dialysis uses a semi-permeable membrane, which allows certain substances to pass through while blocking others.
  • Step 5: In the case of colloidal solutions, the semi-permeable membrane lets the solvent and small solutes pass through but keeps the larger colloidal particles inside.
  • Step 6: Conclude that dialysis is an effective method for purifying colloidal solutions by removing unwanted small particles.
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