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Question

Read the assertion and reason carefully to mark the correct option out of the options given below:

(a)If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b)If both assertion and reason are true but reason is not the correct explanation of the assertion.

(c)If assertion is true but reason is false.

(d) If assertion is false but reason is true.
Assertion : Na2Cr2O7 is not a primary standard solution in volumetric analysis.

Reason : Na2Cr2O7 is hygroscopic.

A
a
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B
b
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C
c
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D
d
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Solution

The correct option is A a
- Hygroscopic substances have affinity for water. Since sodium salt has a greater solubility in water and is extensively used as an oxidising agent in organic chemistry, whereas, Potassium dichromate is used as a primary standard in volumetric analysis.

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