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Assertion:Lyophilic colloids have a uniq...

Assertion:Lyophilic colloids have a unique property of protecting lyophobic colloids. , Reason: Lyophilic colloids are extensively solvated.

A

If both (A) and (R) are correct, and (R) is the correct explanation of (A)

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A)

C

If (A) is correct, but (R) is incorrect

D

If (A) is incorrect, but (R) is correct

Text Solution

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The correct Answer is:
B
When a lyophilic sol is added to the lyophobic sol, the lyophilic particles form a layer around lyophobic particles and thus protect latter from electrolytes. Lyophilic colloids used for this purpose are called protective colloids.
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