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Assertion :The complex K3[Cr(C2O4)3] when present in aqueous solution, will give test for K+,Cr3+and oxalate ions. Reason: The complex K3[Cr(C2O4)3] will dissociate completely in solution.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is D Both Assertion and Reason are incorrect
In aqueous solution, the complex K3[Cr(C2O4)3] dissociates into following ions.

K3[Cr(C2O4)3]3K++[Cr(C2O4)3]3Complexion

[Cr(C2O4)3]3 is a complex ion and will not dissociate in aqueous solutions.

Hence, it will not give test for Cr3+ and C2O24 ions.

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