Dear candidate, March 18 first shift paper was moderately easy overall, Maths section was a bit difficult. July 25 second shift paper was moderate overall with Chemistry section easy to moderate, physics moderate and maths moderate to difficult.

To know more about March 18 first shift paper check:

https://news.careers360.com/jee-main-2021-live-updates-march-18-shift-1-starts-paper-analysis-answer-key-question-paper#:~:text=JEE%20Main%20analysis%202021%20for%20March%2018%20shift%201,more%20of%20theory%20based%20question .

To know more about July 25 second shift paper check:

https://news.careers360.com/jee-main-2021-exam-analysis-for-july-25-shift-2

Hope, it helps!