Hello student

hope you are doing well and safe. With reference to your query,  I would glad inform you that you dont need to worry in your case to be eligible for ntse candidate must complete his 9th with minimum of 60 percent , and it is quite obvious if someone is class 10th then he is currently persuing so doesnt have marks of 10th , so they only ask 9th class marks. Be calm and prepare well

Hope you found this answer informative. Best wishes for your future