Chemistry-Functional Group Tests
NEET Chemistry Functional Group Tests Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 12
Assertion (A): Sodium carbonate extract is used for confirmatory tests of anions when the salt is insoluble in water. | Reason (R): Sodium carbonate extract contains carbonate ions which interfere with the detection of CO3 2- ions.
A
Both (A) and (R) are true and (R) is the correct explanation of (A).
B
Both (A) and (R) are true but (R) is not the correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false.
Correct Answer
Option C
Detailed Explanation
The sodium carbonate extract is used because it can help dissolve salts that are otherwise insoluble in water, allowing the anions to be tested. The presence of carbonate ions in the extract does not interfere with the detection of CO3 2- ions; they are the very ions being tested for.
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