What are the interest rate futures available for trading on the NSE?

Are interest rate futures also traded both on the BSE and the NSE and how are the volumes and open interest on the same?

Can you explain how interest rate futures are settled on the exchange?

Which are the futures and options contracts that are most liquid on any normal trading day on the NSE?

Which are the stock futures contracts that are most liquid on any normal trading day on the NSE?

How many stocks and indices on the NSE are currently available for future and options trading?

What are the lot sizes of the underlying stocks and Indices that are available for futures and options trading?

What are the deductions available on payment of various medical expenses under section 80D?

What are the deductions available other than section 80D for various medical and treatment expenses paid?

I plan to start trading in futures on stocks and indexes? Are there are some things I should avoid as a futures trader?

Can you explain how futures and options trading are done in India?