(C) $K_2Cr_2O_7$ is used as a primary standard in volumetric analysis because it is available in a high state of purity,is stable,and its standard sol

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If the Assertion is correct but Reason is incorrect.

(C) $K_2Cr_2O_7$ is used as a primary standard in volumetric analysis because it is available in a high state of purity,is stable,and its standard solution can be prepared accurately. While it is soluble in water,its suitability as a primary standard is due to its purity and stability,not just its solubility. Therefore,the Assertion is correct,but the Reason is incorrect.

Class 12 Chemistry Principles Related to Practical Chemistry Volumetric Analysis

Medium

Assertion : $K_2Cr_2O_7$ is used as a primary standard in volumetric analysis.
Reason : It has a good solubility in water.

AIIMS 2006 All AIIMS

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If the Assertion is correct but Reason is incorrect.
D
If both the Assertion and Reason are incorrect.