Indian revenue property records explanation needed?

What is the difference between 7/12 extract, 8a extract, and 6 Hak Patra?

If one’s names as owners are on 6 Hak Patra, but not on 7/12 extract what are the legal implications?

If a property owner dies leaving heirs such as wife and children, what do they need to do to enter their names on the revenue records, i.e. what is the procedure and what documents would they need to furnish to enter their names on record?

Thank you , this is very important, so only serious replies please from knowledgeable people.

Does the NIFTY in SINGAPORE continue to trade even after NSE India is closed?

The NIFTY FUT is the leading Index Futures for traders in India at the National Stock Exchange. This trades from 09:55 to 1530 hours IST. The same is also listed at the Singapore Stock Exchange under the name SGX NIFTY (FUT). This trades simultaneously with the NIFTY FUT in India as per the IST equivalent. However, one sees bids on the SGX NIFTY long after the Indian Nifty Fut closes the trading day in India. Can anyone help with an explanation?

What happens to a call option on expiry?

say i brought CALL option of NIFTY,100 lots at strike price 50, and at expiry day i didn’t square it off, but the cash price is of stock is 40, so what happens now, do i lose everything, or what else can happen??Will the money be dissolved?? Can u help me with detailed explanation and an example on this.regards.