Hi Anaya,

For NTSE stage - 1 2020 Examination, the NCERT does not release any official syllabus for the exam. The question paper is divided into 2 sections named MAT ( Mental Ability Test ) and SAT ( Scholastic Aptitude Test ).

MAT includes questions for testing the mental ability.

SAT includes questions from Science, Mathematics, Social science of Class 9th and 10th.

Refer here for more info - https://school.careers360.com/exams/ntse

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!