Assertion: Ortho and para dihydrogen are nuclear spin isomers.
Reason: They have same nuclear spins.

The Assertion is True, Reason is True; Reason is a correct explanation for Assertion

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The Assertion is True, Reason is True; Reason is not a correct explanation for Assertion

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The Assertion is true, Reason is false

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The Assertion is false, Reason is true

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Solution

The correct option is C
The Assertion is true, Reason is false

Molecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel so they don't have same nuclear spins. So, reason is wrong.

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Assertion: Ortho and para dihydrogen are nuclear spin isomers.Reason: They have same nuclear spins.

The correct option is C The Assertion is true, Reason is falseMolecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel so they don't have same nuclear spins. So, reason is wrong.

Assertion: Ortho and para dihydrogen are nuclear spin isomers.
Reason: They have same nuclear spins.

The correct option is C
The Assertion is true, Reason is false

Molecular hydrogen occurs in two isomeric forms, one with its two proton spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel so they don't have same nuclear spins. So, reason is wrong.