Assertion : ${N H}_{3} C l$ and $R C O O N a$ are colloidal electolyte. Reason: The substances which behave as electrolyte below certain concentration limit, beyond this limit colloidal sol is formed, are called colloidal electrolyte.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Colloidal electrolytes are the salt solutions in which any ion is replaced by heavily hydrated polyvalent micelle which increase the conductivity to a greater extent.. These are formed as a result of excessive concentration limit of an electrolyte , Examples are family of soaps and bile salts like $N H_{3} C l$ and $R C O O N a$ .
So both assertion and reason are correct and is correct explanation. So answer is A.

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