I think only the following Rajdhani's have 2PC's:
1. 12235/36 Dibrugarh Rajdhani
2. 12301/02 Howrah Rajdhani
3. 12305/06 Howrah Rajdhani
4.12309 PNBE Rajdhani
5....
more... 12313 Sealdah Rajdhani
6. 12951/52 BCT Rajdhani
7. 12953/54 AK Rajdhani
8. 12957/58 ADI Rajdhani