When arranging the copper mines of Rajasthan from north to south, the correct order is:
- Khetri (ii), located in the northern part of Rajasthan, is the first.
- Alwar (iv) comes next, located south of Khetri.
- Bhilwara (i) is further south, located in the southern part of the state.
- Udaipur (iii) is located at the southernmost position among the listed cities.
Thus, the correct order is: Khetri (ii), Alwar (iv), Bhilwara (i), and Udaipur (iii).