I got 62% in 12th science then can i eligible for improvement exam and what is the process for apply 12th improvement exam
You are eligible to improvement exam only if you apply for in succeeding year of 12th passing year. Means if you passed in 2018 then improvement exam cn be given in 2019.
Students need to apply for improvement exam online. Only then you cannot apply.
Entire process and dates willbe shared below.
http://cbse.nic.in/newsite/index.html