Hello aspirant, sorry to say that engineering is the difficult path and the syllabus itself which it was following is too crucial, we cannot actual assume the difficulty levels of the sets in the engg exams, there is also a talk that engg follows the pattern in which the exams conducted by the board results in giving the 101 question if studied 100,,, so it is difficult to find the importance of the question in engg.., it is better to select the easy chapters and follow the syllabus paper topics to uprigh the standard.., hope you got my answer all the best.