JEE CHEMISTRY MCQ: SOLID STATE

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Assertion (A): Stoichiometric compounds obey the law of constant composition.

Reason (R): Schottky and Frenkel defects are observed in stoichiometric compounds.

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Correct option: B

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

Option B is correct because both the assertion and reason are true, but the reason doesn't explain the assertion. Stoichiometric compounds maintain a fixed ratio of elements, and Schottky/Frenkel defects don't change this ratio, but they are not the *reason* for the law of constant composition.

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