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AIIMS 2006
Exam
AIIMS
Year
2006
Subject
Chemistry
Chapter
d and f Block Elements

AIIMS 2006 · Chemistry · d and f Block Elements

Assertion : K_2 Cr_2 O_7 is used as primary standard in volumetric...

Assertion : K2Cr2O7\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 is used as primary standard in volumetric analysis. Reason : It has a good solubility in water.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of the assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of the assertion
  3. CIf assertion is true, but reason is false
  4. DBoth assertion and reason are false statements.

Correct answer

C. If assertion is true, but reason is false

Step-by-step solution

K2Cr2O7\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 is less soluble in water. K2Cr2O7\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 can be found in pure state and can be accurately weighed. It is not hygroscopic in nature. So K2Cr2O7\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7 is used as a primary standard solution.
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