Engineering Entrance Exam

You can refer to Willey acing book.

It depends upon the highest ranker of the GATE, generally it is around 30 to 35 marks for open or general category.

The GATE examination consists of a single paper of 3-hour duration that contains 65 questions carrying a maximum of 100 marks. The question paper will consist of both multiple choice questions (MCQ) and numerical answer type (NAT) questions. The examination for all the papers is carried out in an on

Yes.
For more information, you can refer to the below mentioned link:
http://gate.iitr.ernet.in/wp-content/uploads/2016/07/Syllabi_GATE2017.pdf

By preparing and of course scoring well in JEE main, you can get admission in NITs, but to get admission in IIT you have to first score well in JEE main and required 75% marks in class 12th. Then you are eligible for appearing in JEE advance examination. If you score well in this exam, you can get a

There is no criteria related to CGPA for GATE exam.

yes u can attempt the state level entrance exam for m.tech in design. but might be u will not get stipend.

Yes, for a better college it can be done. It will take some time but after that your future is bright.
Best of luck.

In 17 mark, you can't get any college, but you can apply for private college. If you wanted to study in best college then take a drop and prepare for class 12 and different entrance exam as JEE mains, BITSAT, VITEE, etc.

According to this year cut off, you need to score around 180-195 marks to get rank below 10,000.