Question

Which of the following is NOT used as a semipermeable membrane?

• A. Cellulose nitrate
• B. Copper ferrocyanide
• C. Ammonium chloride
• D. Cellulose

Hint:

Semipermeable membranes allow selective passage of molecules or ions. Common examples include cellulose and cellulose nitrate.

Answer 1

The Correct Option is C

Step 1: Understanding semipermeable membranes.
A semipermeable membrane is a material that allows certain molecules or ions to pass through it by diffusion and occasionally by facilitated diffusion. Substances like cellulose nitrate, copper ferrocyanide, and cellulose are commonly used in laboratory settings as semipermeable membranes, but ammonium chloride does not serve this purpose.

Step 2: Analyzing the options.
(A) Cellulose nitrate: Cellulose nitrate is commonly used as a semipermeable membrane.
(B) Copper ferrocyanide: Copper ferrocyanide is used as a semipermeable membrane.
(C) Ammonium chloride: Correct — Ammonium chloride is not typically used as a semipermeable membrane.
(D) Cellulose: Cellulose is used as a semipermeable membrane in various applications.

Step 3: Conclusion.
The correct answer is (C) Ammonium chloride.