NTSE has two parts that are SAT (Scholastic Aptitude Test) and MAT (Mental Ability Test). The MAT section will test students on their thinking ability, Reasoning etc. while the SAT is further divided into three sub-sections namely Science, Maths and Social Science.
To check the complete syllabus you can go through with the given below link.
JEE Main College Predictor
Know you Admission Chances for NIT and Other B.Tech College based in JEE Main Score