Admission Process through GMAT

I am looking for the detail of the GMAT for admission process for entering to higher degree in business so please get me with the detail?

The Graduate Management Admission Test (GMAT) is a computer adaptive test (CAT) which checks individual’s analytical, writing, quantitative, verbal, and reading skills for a graduate admission program
It is taken in all business schools especially by IIT for PG courses.

Section Duration in minutes Number of questions
Analytical writing assessment 30 N/A
Integrated reasoning 30 12
Quantitative 75 37
Verbal 75 41

Analytical Writing Assessment (AWA)
An essay that is deficient
An essay that is flawed
An essay that is limited
An essay that is adequate
An essay that is strong
An essay that is outstanding

The total GMAT score ranges from 200 to 800

Contact detail:-

GMATCandidateServicesAmericas@pearson.com
Telephone (toll-free): +1 (800) 717-GMAT (4628), 7 a.m. to 7 p.m. CT
Telephone: +1 (952) 681-3680, 7:00 a.m. to 7:00 p.m. CT
Fax: +1 (952) 681-3681