Who conducts the GATE? What is the duration of the exam?

GATE exam is conducted by the main eight IITs IISc. every year one of them will take the liability of conducting the exam. Duration of the exam is 3 hours. Exam pattern is for 100 marks of 65 questions. 15 marks are allotted to general aptitude and rest 85 marks are of respective discipline. further there are 2 types of questions one is objective type questions where 4 options are given for a question and one of which or sometimes even 2 options are correct. other type of questions is NAT ( numerical answer type) questions where only question is given and we have to answer using given calculator. there will be a range in which our answer should lie. further there is negative marking for wrong answers in 1 and 2 marks questions. in paper there will be 30 one mark questions and 35 two marks questions. 1/3rd marks deducted for wrong one mark answer and 2/3rd marks deducted for wrong 2 marks questions. any further queries are welcomed. All the best!