hello dear,

jee mains exams are conducted in two phase(January session and April session)

registration tentatively starts from october to november for january session and from February to march for the april session

Jee mains 2021 tentatively starts in between 2nd or 3rd week of january for january session and in between 2nd or 3rd week of april for aplril session.

You can also keep tracking the official dates regarding jee mains 2021 from NTA official website which is given below:

https://nta.ac.in/

the syllabus mostly includes 11th and 12th standard from physics chemistry and maths and require to use in application for the same

all the best!!