btado please

tell krdow fas fas

I have done full bio except plant physio.... like my 12th is good I have done pyqs too of all the chapters but 11th I'm revising rn. and I have done Kinematics unit and measurements modern physics kra h pr not confident toh shyd raat me ek baar dekhu aur Semiconductors krungi ... chemistry ka bhaiya idk😭😭😭kya hoga mera .... what are the minimum marks I can get from this and please tell me what can I do in chemistry to get also 20 30 marks 😭