1.

Assertion. Antiferromagnetic substances on heating to high temperature become paramagnetic . Reason. On heating, randomisation of spins occurs.

Answer»

If both assertion and REASON are TRUE, and reason is the true EXPLANATION of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assertion.
If assertion is true , but reason is FALSE
If both assertion and reason are false.

SOLUTION :R is correct explanation of A


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