You can get it at this site https://www.nseindia.com/live_market/dynaContent/live_watch/derivative_stock_watch.htm
However, you need to track the option chain of highly liquid Index n stocks, and give others a bye. There are not more than 20 stocks which has good liquidity & low bid-ask spreads in options. Rest of the Stock FNO, you will be carved while going in, you will be carved while going out (due to high bid-ask spread).
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