The GRE is the most widely accepted test for graduate admissions in graduate and business schools worldwide. The Educational Testing Service conducts it, often referred to as the ETS. In India, the GRE is conducted as a Computer Based Test (CBT) at several Prometric and non-Prometric test centers in most major cities.
Note that the GRE is more of a test of your analytical skills than your technical knowledge and has 3 sections, Verbal Reasoning, Quantitative Reasoning, and Analytical Writing Assessment.
There is no common question paper or even a set of question papers for GRE preparation. Rather, there is a database of test questions of assorted difficulty levels. The GRE is an adaptive style test, which means that your performance on the first section determines the difficulty level of the second. For example, if your answers to the first set of questions are mostly correct, then the difficulty of the next set of questions would be higher, and so on. However, if you score less in the first section, the difficulty level of the subsequent section will be reduced. The test-takers start with questions of average difficulty level. Except for the first part of the test, the rest of the sections adapt according to the knowledge quotient of the test taker