The Problem with the ‘Only Question-Answer’ based Approach.

Without exception, every topic you read must be followed up by questions. This is important to ascertain your understanding of the topic and remember key points from it from an exam perspective. There is another band of thinking that encourages reading the questions (Only) FIRST, before even reading the topic. This too is a very good way of understanding what you’re about to read in this particular topic/Series/Part. Whichever one you select is quite up to you. Both have the effect of providing increased clarity on the subject and getting rid of the clutter, or what I call ‘the fillers’! There is however, a very strong urge with the latter method (reading questions first off), to read the questions, find their answers, and move on!
Quite often what I’ve noticed people doing, and regrettably something which I’ve practiced myself without much luck, is that they rush to the section on questions, read, and try answering the questions by ‘cross-checking’ from the Series/Part! The actual matter in the Series/Part is forgotten about altogether! This is more often than not a result of ‘less time’ for preparation, the ‘huge syllabus’, and an imposing, almost desperate need, to pass the exams. IT DOES NOT HAPPEN! Simple as that.
The reason for the questions to be provided is as mentioned above. Trying out shortcuts leads to the LONGEST way around! Making the correct use of questions is important. I agree it is very tempting to read just the question and answers and make matters easier for yourself rather than read the entire C.A.R. but there ARE no shortcuts.

The real problem for a person reading only questions and answers for an exam is something he/she realizes only after a few failed sittings. That is, the DGCA twists and turns the questions in the exams to an extent that is frustrating to even those best prepared for it! You can read the question and re-read it and even memorize it. But come next sitting, you will find an entirely new way in which they’ve presented the question! It almost seems as though they, have nothing better to do!

The choice is your then. It is my personal belief that if you make incorrect use of questions/question banks, you are taking a risk. The consequences of that risk are solely yours to bear.