Since the syllabus of the IIT-JEE is very vast, the prior knowledge of the exam pattern can prove very helpful. If the patterns are known the students would focus on those topics and questions which are frequently asked in these exams. This will save a lot of valued time of the students. This can be done with the help of a model paper. A model paper have typical questions that are asked in a particular exam. Based upon that the students can practice, so that they can achieve perfection.
These model papers are also very effective in building the speed of the students. If the students practice regularly with these model papers, they can quickly solve those problems that he has encountered so many times earlier too. This way, during the exams, he can solve the questions faster and with ease also. These model papers also come with the solutions of the asked questions. Therefore, the students can also learn from their mistakes.
This way, a student can solve a question faster and also would not repeat his mistakes. Since there are so many tricky questions to be solved in a short time, a prior knowledge of the pattern and solving technique proves to be of great help to the students and they can achieve their target better.