Hello aspirant,

You must score atleast 75% in 12th class with the compulsory subjects physics, chemistry and maths to participate in JEE Mains exam and to get admission in good engineering colleges. Also, when this exam is conducted results of 12th class are not declared, so you can give exam without 12th results but during counseling your 12th percentage will be asked.

Hope it helped to clear your delimma.