Hello,

JEE Main 2019 for April session will be conducted on April 7 (Paper 2) and April 8, 9, 10 and 12 (Paper 1). 

The below link has sample papers and question papers with answer key.  By solving sample papers of JEE Main 2019 you will able to know your strong and week areas and where improvement is needed. You will also be able to improve your speed and learn to manage the time which plays a curial role.

The two are: 

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

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

Hello hari 

Yes i will provide you the sample papers for preparation but before that i hope you studied all concepts of ncert books and as well as reference books 

For the sample or model question papers i will provide you the link below 

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-main-sample-papers/amp

Good luck