Hi Khushi,

According to the eligibility criteria of NDA Exam 2020, only unmarried male candidates are eligible to apply for this exam.

If we talk of other exams conducted by UPSC then, yes, a girl can apply and appear in the exams like Civil Services Examination, Engineering Services Examination(IES) etc.

Refer here for more info - https://competition.careers360.com/articles/nda-eligibility-criteria

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!