According to the official syllabus, DU B.El.Ed consists of 100 MCQs in English, Hindi, Social Sciences,Mathematics and Science upto Class 10. There is no General Knowledge and Reasoning topics in the Syllabus. So under English, go for Comprehension and Verbal Ability. If you have already brought the book, we would suggest you to first complete the Subjects and then may be a just a week before the exam, read through the reasoning and General Knowledge just in case if there are questions asked out of syllabus. But mostly they will not be because the official bulletin doesn't mention any Reasoning and General Knowledge as topics in the Entrance examination.