On 6/09/2015, after two consecutive Government holidays the Science and technology Exam was held. This question was also not similar to any previous years question, so no surprise this time because everyone was expecting this kind of question.
The conventional questions were few rather some creative or innovative questions were introduced.
Though it was not very comfortable but i enjoyed this type of question. I know, that it was not very appreciated by all, but i liked it.
So i think to prepare for this kind of questions you have to understand the scientific reasons only memorizing will not be helpful.