AIIMS 2019 Chemistry Magnetic Properties MCQ Question
Assertion: Pure is obtained from but not from
Reason: On decomposition gives gas.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option C is correct because the magnetic properties of MnO depend on the specific arrangement and interactions of its magnetic moments, which cannot be definitively determined without additional information about its crystal structure and temperature conditions. While MnO is known to exhibit antiferromagnetism, the statement about electron spins being in opposite directions lacks sufficient context to be universally true or false. Option A is incorrect as it oversimplifies the complex nature of magnetic interactions, while option B dismisses the possibility of antiferromagnetism without considering the material's properties. Option D is irrelevant as it does not provide a valid alternative.
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