Gmat paper consists of four sections which are-

1.Analytical writing assessment

2.Integrated reasoning

3.Quantitative reasoning

4.Verbal reasoning

GMAT will test you for these four sections. Also GMAT is a adaptive test. If i told you with example then if you will answer first que correct then the next question that appears on screen will be slightly hard and if you will answer wrong then the question that comes to your screen will be of easy level. Also you will get marks accordingly. I think i have answered your question. Still if you have any doubt then feel free to ask.