Question:
The correct statements with respect to dialysis of colloidal solution are
I. Colloidal particles can pass through the membrane
II. Animal bladder can be used as membrane
III. Cellophane is not used as membrane
IV. Ions or small molecules can diffuse through membrane into water
The correct statements with respect to dialysis of colloidal solution are
I. Colloidal particles can pass through the membrane II. Animal bladder can be used as membrane III. Cellophane is not used as membrane IV. Ions or small molecules can diffuse through membrane into water
I. Colloidal particles can pass through the membrane II. Animal bladder can be used as membrane III. Cellophane is not used as membrane IV. Ions or small molecules can diffuse through membrane into water
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In dialysis, colloidal particles cannot pass through a semipermeable membrane, whereas dissolved ions and small molecules can. Common dialysis membranes include animal bladder, parchment paper and cellophane.
Updated On: Jun 26, 2026
- I, II only
- II, III only
- III, IV only
- II, IV only
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The Correct Option is D
Solution and Explanation
Step 1: Understand dialysis.
Dialysis is the process used to purify a colloidal solution by removing dissolved impurities such as ions and small molecules through a semipermeable membrane.
The semipermeable membrane allows small ions and molecules to pass through but prevents colloidal particles from passing through.
Step 2: Examine Statement I.
Statement I says: Colloidal particles can pass through the membrane This is incorrect because colloidal particles are too large to pass through the pores of a semipermeable membrane.
Therefore, \[ \boxed{\text{Statement I is false}} \]
Step 3: Examine Statement II.
Statement II says: Animal bladder can be used as membrane Animal bladder is a commonly used semipermeable membrane in dialysis.
Therefore, \[ \boxed{\text{Statement II is true}} \]
Step 4: Examine Statement III.
Statement III says: Cellophane is not used as membrane This statement is incorrect because cellophane is widely used as a semipermeable membrane in dialysis.
Therefore, \[ \boxed{\text{Statement III is false}} \]
Step 5: Examine Statement IV.
Statement IV says: Ions or small molecules can diffuse through membrane into water This is exactly the principle of dialysis.
Small ions and dissolved impurities pass through the membrane into the surrounding water, while colloidal particles remain inside.
Therefore, \[ \boxed{\text{Statement IV is true}} \]
Step 6: Final conclusion.
The correct statements are \[ \boxed{\text{II and IV only}} \] Hence, the correct option is \[ \boxed{(4)} \]
Dialysis is the process used to purify a colloidal solution by removing dissolved impurities such as ions and small molecules through a semipermeable membrane.
The semipermeable membrane allows small ions and molecules to pass through but prevents colloidal particles from passing through.
Step 2: Examine Statement I.
Statement I says: Colloidal particles can pass through the membrane This is incorrect because colloidal particles are too large to pass through the pores of a semipermeable membrane.
Therefore, \[ \boxed{\text{Statement I is false}} \]
Step 3: Examine Statement II.
Statement II says: Animal bladder can be used as membrane Animal bladder is a commonly used semipermeable membrane in dialysis.
Therefore, \[ \boxed{\text{Statement II is true}} \]
Step 4: Examine Statement III.
Statement III says: Cellophane is not used as membrane This statement is incorrect because cellophane is widely used as a semipermeable membrane in dialysis.
Therefore, \[ \boxed{\text{Statement III is false}} \]
Step 5: Examine Statement IV.
Statement IV says: Ions or small molecules can diffuse through membrane into water This is exactly the principle of dialysis.
Small ions and dissolved impurities pass through the membrane into the surrounding water, while colloidal particles remain inside.
Therefore, \[ \boxed{\text{Statement IV is true}} \]
Step 6: Final conclusion.
The correct statements are \[ \boxed{\text{II and IV only}} \] Hence, the correct option is \[ \boxed{(4)} \]
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