Six persons are seated around a hexagonal table. Anup is seated opposite Belal, who is between Chirag and Derek. Anup is between Ela and Farook. Ela is to the immediate left of Derek. Which of the following pairs is facing each other?

Let us trace the positions around a hexagonal table facing inward, numbered $1$ to $6$ sequentially in a clockwise manner:
1. Place Anup at position $1$. Since he sits directly opposite Belal, Belal must be placed at position $4$.
2. Belal ($4$) is seated between Chirag and Derek. This means Chirag and Derek occupy positions $3$ and $5$ in some order.
3. Anup ($1$) is between Ela and Farook. This means Ela and Farook occupy positions $2$ and $6$ in some order.
4. We are given that Ela is to the immediate left of Derek. Facing the center, the immediate left of a position follows a clockwise direction. If we place Derek at position $5$, his immediate left is position $6$. Therefore, Ela is at position $6$.
5. Since Ela is at position $6$, Farook must be at position $2$. Since Derek is at position $5$, Chirag must be at position $3$.

Let us find the opposite facing pairs (positions separated by 3 spots):

* Position $1$ and $4$: Anup and Belal
* Position $2$ and $5$: Farook and Derek
* Position $3$ and $6$: Chirag and Ela

Thus, the pair facing each other is Chirag and Ela.