Having a clear idea about the exam pattern and syllabus would come in handy for the preparation of Grade A prelims. Unless you prepare properly with an effective strategy, you are going to find it tough. There will be questions from Computer, English Language, Reasoning, Quantitative, etc. Each of these topics will have objective-type questions. Come up with mock tests of these topics so that you can clear the preliminary exam within the stipulated time and get selected for the mains.