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NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

1 Easy
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Analyzing +4 | -1
Given below are two statements:

Statement I : Aqueous solution of K2Cr2O7\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 is preferred as a primary standard in volumetric analysis over Na2Cr2O7\mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7 aqueous solution.

Statement II : K2Cr2O7\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 has a higher solubility in water than Na2Cr2O7\mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7.

In the light of the above statements, choose the correct answer from the options given below:
View answer and explanation
Correct option: C
Statement I is true but Statement II is false
Option C (Statement I is true but Statement II is false) is correct because K2Cr2O7 is preferred as a primary standard due to its lower hygroscopicity and higher molar mass, but it has lower solubility than Na2Cr2O7.

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