Question:
Assertion (A): Blood cells collapse when suspended in saline water.
Reason (R): Cell membrane dissolves in saline water.
Assertion (A): Blood cells collapse when suspended in saline water.
Reason (R): Cell membrane dissolves in saline water.
Reason (R): Cell membrane dissolves in saline water.
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In a hypertonic solution, water moves out of the cell by osmosis, causing the cell to shrink.
Updated On: Jun 15, 2026
- Both (A) and (R) are correct and R is the correct explanation of A
- Both (A) and (R) are correct, but R is not the correct explanation of A
- (A) is correct but (R) is not correct
- (A) is incorrect but (R) is correct
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The Correct Option is C
Solution and Explanation
Step 1: Analyze Assertion (A).
When blood cells are placed in concentrated saline water, water moves out of the cells due to osmosis.
As a result, the cells shrink or collapse.
Therefore, Assertion (A) is correct.
Step 2: Analyze Reason (R).
The cell membrane does not dissolve in saline water.
The collapse of blood cells occurs due to osmosis, not because of dissolution of the cell membrane.
Therefore, Reason (R) is incorrect.
Step 3: Final conclusion.
Hence, Assertion (A) is correct but Reason (R) is not correct.
\[ \boxed{\text{(A) is correct but (R) is not correct}} \]
When blood cells are placed in concentrated saline water, water moves out of the cells due to osmosis.
As a result, the cells shrink or collapse.
Therefore, Assertion (A) is correct.
Step 2: Analyze Reason (R).
The cell membrane does not dissolve in saline water.
The collapse of blood cells occurs due to osmosis, not because of dissolution of the cell membrane.
Therefore, Reason (R) is incorrect.
Step 3: Final conclusion.
Hence, Assertion (A) is correct but Reason (R) is not correct.
\[ \boxed{\text{(A) is correct but (R) is not correct}} \]
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