Hello Saurabh kumar

I hope you are doing good

I would like to aware you that almost every university given admission in bachelor of science  in physics,chemistry,maths on the basis of marks scored in 12th . On the basis of number of students had filled the form and no.of seats available , cutt off is decided by authorities and then merit list is prepared. Moreover lockdown has been imposed this year ,conducting entrance seems to be very difficult

Hope you found this answer helpful. Good luck for your future