Hi Rounak, Mocks are simply a way to prepare for the main exams. Mock helps you to identify your weak areas and improve them. They do not reflect how much you would score in the actual exam. Take the mocks regularly, identify the areas of your weaknesses and work on them regularly to improve. 

The question of getting in or getting admission into your dream college depends on the actual exam score and GD/PI. Therefore, first thing is hard work and dedication. Work hard, take mocks, prepare well and do the best in exam.

Good luck!