How Reliance F&O - would be impacted - Reliance Jio Financials Share (1:1)

No, holders of F&O contracts don’t get corporate action benefits. Previously Motherson Sumi Systems went through demerger and traded in F&O segments as well.

The exchange on that occasion revised the expiry date for F&O contracts to before the ex-date and reintroduced contracts again on the ex-date. More on this here: Adjustments in F&O contracts of Motherson Sumi on account of demerger