Question

Membrane filtration refers to
(A) Separation of soils from liquids
(B) A separator is used which could be porous medium or membrane
(C) Helps in clarification of juices and separation of microbes
(D) Not commonly used in fruit juices, wine and beer
Choose the correct answer from the options given below:

• A. (A), (B) and (D) only.
• B. (A), (B) and (C) only.
• C. (A), (B), (C) and (D).
• D. (B), (C) and (D) only.

Hint:

Membrane filtration basics:
Uses a semi-permeable membrane (a type of porous medium) to separate components. (A, B are True)
Widely used for clarifying juices and removing microbes (like bacteria/yeast) for cold sterilization. (C is True)
It IS commonly used in processing fruit juices, wine, and beer. (D is False)

Answer 1

The Correct Option is B

Step 1: Membrane filtration is widely used to clarify juices, wine and beer, so statement (D) is false.
Step 2: Any answer option containing (D) can be dropped, which eliminates 3 of the 4 options at once.
Step 3: Only the option with (A), (B) and (C) survives this elimination.
Step 4: The correct answer is (A), (B) and (C) only.