Hello Gautham,

By preparing the previous question papers you can easily came know how the question are coming in the exam and also you can know in what way the question are given in the exam .Then by doing that model problems you can easily get the good marks in the jee mains exam.The previous papers can be get by going into the below link.,

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

Hope this helps you..