Hello sathik,

  For JEE Mains samples you can go through the JEE mains paper for the current and the previous year ones which would be enough to get a general idea about the exam.

  So for that you can visit this link-https://engineering.careers360.com/articles/jee-main-sample-papers.

Here you will be able to get the question papers of 2019 JEE Mains papers and also previous years paper.It is advisory to solve previous years for practice and difficuilty of questions.

You can visit this link for answers and solution-https://engineering.careers360.com/articles/jee-main-question-paper.

Hope this was helpful.All the best!!!