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

Let us assign positions numbered $1$ to $6$ sequentially around the hexagonal table:
1. Place Arup at position $1$.
2. Belal is seated opposite Arup, which corresponds to position $4$.
3. Belal is between Chirag and Derek, meaning they occupy positions $3$ and $5$.
4. Arup is between Ela and Farook, meaning they occupy positions $2$ and $6$.
5. We are given that Ela is to the left of Derek. Assuming all individuals face inward toward the center:
* If Derek is at position $5$, looking inward, his immediate left (moving clockwise) is position $6$. Therefore, Ela must be placed at position $6$.
* This leaves Chirag at position $3$ and Farook at position $2$.

Let us review the opposite (facing) pairs based on this layout:

* Position $1$ (Arup) faces Position $4$ (Belal)
* Position $2$ (Farook) faces Position $5$ (Derek)
* Position $3$ (Chirag) faces Position $6$ (Ela)

Thus, Chirag and Ela are facing each other.