CMAT is devided into the section Quantitative Techniques & Data Interpretation, Logical Reasoning, Language Comprehension, General Awareness.

 CMAT topics of Quantitative Techniques & Data Interpretation
Numbers, Percentage, Profit & Loss, Mixtures, Averages, Ratios, Interest, Equations
 Time & Work, Time, Speed & Distance
 Geometry
  Standard DI tools

CMAT topics in General Awareness
    Current Events & Happenings, including international affairs
    History, Geography, Polity, Science
    Sports, Art & Culture
    Books & Authors, Awards

CMAT Logical Reasoning topics
    Assertion-Reasoning, Inferences, Critical reasoning
    Assumption-Premise-Conclusion, True and False Statements
    Linear arrangements, Sequences and series
    Strong - Weak arguments, Statements and assumptions

CMAT topics for Language Comprehension
    Rearranging sentences
    Vocabulary, with questions on antonyms and synonyms
    Grammar & Sentence Correction
    Reading Comprehension

Make your time Schedule & devide it topic wiseit will help you to cover all the syllabus.

Do practise as much you can to improve your score. Overall, CMAT is designed to assess you on certain core management skills like time management, prioritization, stress management, knowledge and balancing accuracy & speed.

Good Luck!