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The correct set of ions (aqueous solution) with same colour from the following is :

1. V 2+ , Cr 3+ , Mn 3+
2. Zn 2+ , V 3+ , Fe 3+
3. Ti 4+ , V 4+ , Mn 2+
4. Sc 3+ , Ti 3+ , Cr 2+

Correct answer: V 2+ , Cr 3+ , Mn 3+

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