Hello Aspirant,

Yes your marks are good enough to meet the basic eligibility criteria of most of the competitive exams. So you don't need to worry a lot..

Also this might be helpful for you or some of your friends:- Careers360 is conducting the All India Talent search exam where students of 11th and 12th PCM/PCB can test their knowledge and enhance their preparation by knowing their stronger and weaker areas and win prizes and scholarships worth 1.25 Crore.
If you are an Engineering or medical aspirant, it is a great opportunity for you. Take the test, perform the best, avail the scholarship and win prizes.

You can win exciting prizes such as:
50,000/- cash Prizes, Upto 100% Scholarship on JEE / NEET AI-Based preparation packages, Laptops, Smartphones, Amazon Echo, Careers360 Almanacs, Powerbanks, Upto 250/-  paytm *Cashback offer

Link: https://learn.careers360.com/careers360-talent-search-exam
http://bit.ly/2y6HY6U

Good percentage to give any entrance exam