To get success in engineering entrance exam, one must prepare really well for it. As the competition is going crazy day by day, the questions asked in entrance exams are also becoming harder and harder.
After completing +2 Science, students often get confused about how they should prepare for engineering.There are some options like joining entrance preparation institutions. But the key of succeeding is how you prepare for it. If you are dedicated to get success, you will definitely(most probably) get success but if you doubt yourself or hesitate to practice each day, you will fail for sure.
Although, you are taking some courses and take model exams almost each week, you may fail in the final exam. There are many factors behind such type of failures. Some of them include improper preparation, being pessimistic etc.
To get success, the one and only key is to practice and practice. The more you practice, you become more confident and hence you can select correct answer.
Also, you can take an advantage of technology. As almost each student own a mobile phone these, they can use it to memorize or practice in leisure time. There is an android app called Entrance Capsule in Google Play-store which you can download for free. It contains questions of each subject, old question sets and even you can practice with random model questions.