As you have asked about the Common Admission Test (CAT) entrance exam in India, I am giving you information about it, check below for the details

Common Admission Test (CAT) is a computer based test held in India.
The test scores a candidate on the bases of Quantitative Ability (QA), Verbal Ability (VA) and Reading Comprehension (RC), Data Interpretation (DI) and Logical Reasoning (LR).

CAT Exam Pattern

Duration of the exam was 180 minutes (3 hours). There were objective as well as descriptive type questions.
Section Number of questions
Quantitative aptitude (QA) 34
Data interpretation and logical reasoning (DILR) 32
Verbal and reading comprehension (VRC) 34

Marking scheme

For questions other than MCQs, 3 marks are assigned for correct answer and no marks for wrong or no attempt.

The scoring scheme for multiple-choice questions is as follows:

Each correct answer is awarded 3 marks.
An incorrect answer fetches -1.
No marks are given or deducted for un-attempted questions.

Eligibility

The candidate must hold a Bachelor’s Degree, with at least 50% marks or equivalent CGPA
Candidates appearing for the final year of bachelor’s degree / equivalent