What do you think is the best in you and what was in your favor that you got selected by your recruiter?
Do you believe you got selected by them because you claimed that you have scored 60% or + and if you did so, then why you lied to them?
Please share educational qualification and work experience.
And as you have selected by them, you certainly gonna be asked to serve your documents such as your certificates and other qualification certificates while at the time of joining, which can reveal the reality, what would you do then?
Therefore, they don't need to go to Background Verification as it is going to be clear automatic but I feel there is something else which you want to know but still have not shared here..
About your question, hidden truths can bother you anytime so you need to confess it before it gets too late. Also you need to know and understand why you been selected by them.
Consider my questions, and answer to yourself first.