Hello Aspirant,

You can previous year question papers of JEE-Main as well as sample papers from the links given below :-

https://engineering.careers360.com/articles/jee-main-sample-papers

https://engineering.careers360.com/articles/jee-main-question-paper

You can also check out our JEE-Main Learner's program which includes the full length Mock test series  and you check out this from the link given below :-

https://learn.careers360.com/knockout-jee-main-april/?product=27

As per the guidelines for examination day of JEE:-

>>>> You should carry your Admit card along with one government ID proof.

>>>> Masks are compulsory in the wake of pandemic.

>>>> There you will have to maintain the distance of at least 6 feet.

>>>> When you will enter in the examination hall you will have to give your left hand thumb impression on attendance sheet.

For more detailed guidelines kindly check out the link given below :-

https://engineering.careers360.com/articles/jee-main-exam-day-guidelines

I hope this information helps you.

Good Luck!!