knowledge of which subjects is to be known to give exam of MBA ?

Kavya, there are quite a few entrance examinations for MBA.

CAT: CAT is an online examination of 3 hours duration. To be eligible for CAT, you should have completed your Bachelor's degree in any discipline with a minimum aggregate of 50%. It is 50% for General Category and 45% for Reserved Categories.

MAT: To be eligible for MAT, you should have completed your Bachelor's degree in any discipline. There is no minimum aggregate criteria.

IIFT: To be eligible for IIFT, you should have completed your Bachelor's degree in any discipline with a minimum aggregate of 50%. It is 50% for General Category and 45% for Reserved Categories.

SNAP: To be eligible for SNAP, you should have completed your Bachelor's degree in any discipline with a minimum aggregate of 50%. It is 50% for General Category and 45% for Reserved Categories.

NMAT: To be eligible for NMAT, you should have completed your Bachelor's degree in any discipline with a minimum aggregate of 50%. Candidates with a minimum of 2 years work experience are preferred.

CMAT: To be eligible for CMAT, you should have completed your Bachelor's degree in any discipline. There is no minimum aggregate criteria.

You can check the complete list at our page: https://bschool.careers360.com/articles/top-mba-entrance-exams-you-must-take

The syllabus more or less depends on the topics like:

Quantitative Ability
Verbal Ability and Reading Comprehension
Data Interpretation and Logical Reasoning

QA can be categorised into Arithmetic, Algebra, Geometry and Advanced Mathematics. Practise chapter by chapter and develop mental calculations. Like practise more of basic summation, subtraction, fractions and tables. Numbers, Percentage, Profit and Loss, Simple and Compound Interest, Ratio, Proportionality, Time-Distance, Time-Work, Mixtures, Averages, Partnership, Permutation and Combinations, Probability, Set Theory, Progression and Series, Line, Angles, Triangles, Quadrilaterals, Polygon, Circles, Ares, Volume, Height and Distance, Coordinate Geometry, Basic Trigonometry are few important topics.

In Verbal Ability session, command on your English, Grammar, Vocabulary, Understanding of the given paragraph are of more importance. Reading English NewsPaper will also help you in your preparation.

Data Interpretation and Logical Reasoning needs to be practised as much as possible. Comparison of data, Data Analysis, taking clues, interpreting missing data, coming to conclusions and making future projections will be covered under this Category. The questions here are interlinked and so if you get one formula correct, cracking the next few questions will be easy. So it's important to memorise and practise formulae. You should cover topics like Data tables, Data Charts, Bar Diagrams, Pie Charts, Graphs, Data Comparison and Analysis.

Dear Aspirant,

You have not specifically mentioned about a particular entrance exam for MBA. But following are some subjects which are almost in all mba entrance exam

Quantitative aptitude ( mathematics from 8-10 std)

Logical reasoning ( puzzles, syllogisms, critical reasoning)

Verbal ability ( English comprehension, para jumbles etc)

In some entrance exam General Knowledge questions are also asked

Hope this helps