Arranging Rajasthan's copper mines from north to south, the order is as follows:
- Khetri (ii) is the northernmost mine.
- Alwar (iv) is situated south of Khetri.
- Bhilwara (i) is located further south, in the southern region.
- Udaipur (iii) is the southernmost mine among the listed locations.
Therefore, the complete order from north to south is: Khetri (ii), Alwar (iv), Bhilwara (i), and Udaipur (iii).