F&O Instruments are not traded during pre-market trading slot.
Yes, it is executed at Market Price after 9.15am.
No.
AMO Market orders for Equity Segment will be executed at Market Price after Market open, if not filled during pre-market.
AMO Limit Orders for Equity Segment will be converted into a Limit Order.
AMO Market orders for F&O instruments are executed this way by default.