I am considering You are about to lose your IR Rating and need to renew / validate it.
Chimes aviation, Amber Aviation, Alchimist Aviation, Birmi Flying academy and Orient School have Senecas as per DGCA website.
I know Chimes has a Seneca Turbo last I'd heard. They used to charge between Rs.30,000 to Rs.40,000 Per hour. The IR Check is usually an Hour to Hour and Half.
Many people would say don't worry, You never fail in India, etc, etc. But I would say, prepare like you'd for your FAA , Australian, Canadian IR Renewal skill test.
The procedure and pattern of the flying test vastly depend on the place you go to. If there are the instruments, viz ILS , VOR, NDB ; you can fly them. If not, then what ever the Examiner says. You will have to talk to the instructor and students at the place you choose to fly.
All the best for your test and please do write back the way you choose to help others with the same situation.
Silent.