The importance of Science and Technology can be seen from the number of questions asked in previous years. Last year there were more questions on environment, so less in Science. Considering the trend, in 2015, we can expect more number of questions from this section.
While analyzing the questions, it is clear that almost all questions are analytical and demands clarity of concepts rather than only facts. It is getting even tougher for an aspirant to prepare the analytical aspect because none of the static sources teaches about it, be it NCERT or NIOS etc.