Hello Aspirant

Yes, you can definitely pursue MBA from all the top institutions as maximum of them require minimum 50% marks in class 10, class 12 and graduation and you are fulfilling their criteria.

Yes, there will be some disadvantage as their is marks for every class marks which are required but that can be compensated with your good CAT percentile and your group discussion and personal interview.

It won't affect much and many institutions doesn't give much weightage toh class 12th marks.

You can definitely pursue MBA from top institutions in India.

I hope this information would be helpful for you.

All the best for your bright career ahead