Given below are two statements:Statement I: S | vedclass

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(B) Sodium dichromate $(Na_2Cr_2O_7)$ is highly hygroscopic, meaning it absorbs moisture from the atmosphere, which makes it unsuitable as a primary s

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Both Statement $I$ and Statement $II$ are false

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(B) Sodium dichromate $(Na_2Cr_2O_7)$ is highly hygroscopic, meaning it absorbs moisture from the atmosphere, which makes it unsuitable as a primary standard. Potassium dichromate $(K_2Cr_2O_7)$ is stable and non-hygroscopic, making it a primary standard. Thus, Statement $I$ is false.Phenolphthalein is a weak organic acid, represented as $HIn$. It dissociates in a basic medium to form the colored $In^-$ ion. It does not act as a base, nor does it dissociate in an acidic medium. Thus, Statement $II$ is false.

Given below are two statements:
Statement $I$: Sodium dichromate and potassium dichromate are classified as primary standards in titrimetric analysis.
Statement $II$: Phenolphthalein is a weak base, therefore it dissociates in acidic medium.

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Given below are two statements:Statement $I$: Sodium dichromate and potassium dichromate are classified as primary standards in titrimetric analysis.Statement $II$: Phenolphthalein is a weak base, therefore it dissociates in acidic medium.