Hello,

Eligibility criteria vary for every exam. Kindly mention, you are asking about which exam?
Good Luck!

Hello,

Yes in NDA written exam you need to secure the minimum qualifying marks in each subject. This qualifying marks varies every year. UPSC did not mention about this qualifying marks in the notification. However, after analysing the previous years' cutoffs, it has been found that there is minimum qualifying marks. 

Thank you!!