Dear student

The reduced syallbus is for only 10th boards exam and it's not apply for any entrance exam. Jee mains syallbus are not from class 10th. Jee mains syallbus only consist of class 11th & 12th topic only.

But yeah class 10th topics are basis for upcoming 11th &12th classes. So you better read every topics if you want to strong your basic's for upcoming classes and it will be very helpful also. If you don't know concept of class 10th then it's very hard to grab the next Higher class concept. So be pakka with your basic's and it will be helpful for preparing jee mains exam also.

Otherwise if you want to just pass class 10th exam with good marks then you can read only your reduced syallbus.

Hope this information helps you

All the best!!