Assertion : Sulphate is estimated as BaSO 4 and not as MgSO…

Chemistry Enviromental Chemistry ( Not In Syllabus ) JEE ADVANCED Previous Year Question Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

Assertion : Sulphate is estimated as BaSO 4 and not as MgSO 4 .

Reason : Ionic radius of Mg 2+ is smaller than that of Ba 2+ .

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

Both Assertion and Reason are true but Reason is not correct explanation of Assertion.

Assertion is true but Reason is false.

Assertion is false but Reason is true.

Text Solution

Verified by Experts

The correct answer is:

Sulphate is estimated as BaSO 4 , not as MgSO 4 because MgSO 4 is soluble in water and does not form a precipitate.

The ionic radius of Mg 2+ is smaller than that of Ba 2+ because of moving down in a group ionic radic increases.

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