1. Understand the Topics:
- Start by thoroughly understanding the topics with higher weightage. Read the study material provided by your institution or refer to reliable resources like textbooks or online platforms such as EduRev.
- Take notes while studying to help you retain the information better. Highlight key points, important formulas, and concepts.

2. Organize Your Study Plan:
- Create a study plan that allocates more time to the topics with higher weightage. Prioritize these topics and allocate specific time slots for studying them.
- Break down your study plan into smaller, manageable chunks to avoid overwhelming yourself.

3. Active Learning Techniques:
- Instead of passively reading or listening to lectures, engage in active learning techniques to enhance your understanding and retention.
- Summarize the topics in your own words, teach them to someone else, or create flashcards to review key concepts regularly.
- Solve practice problems or attempt past examination papers to apply the knowledge you have learned.

4. Use Visual Aids:
- Visual aids such as charts, diagrams, and mind maps can help you visualize and understand complex topics more effectively.
- Create visual representations of important concepts and refer to them regularly during your study sessions.
- Utilize online platforms like EduRev, which provide visual aids and interactive learning materials for various subjects.

5. Regular Revision:
- Regularly revise the topics with higher weightage to reinforce your understanding and retain the knowledge.
- Set aside dedicated time for revision in your study plan and review the key points, formulas, and concepts frequently.
- Practice solving problems related to these topics to test your understanding and identify areas that need improvement.

6. Seek Clarifications:
- If you encounter any doubts or difficulties while studying, don't hesitate to seek clarification from your teachers, classmates, or online forums.
- Discussing the topics with others can help reinforce your understanding and provide different perspectives on the subject matter.

7. Stay Consistent and Motivated:
- Consistency is key to effective retention of knowledge. Stick to your study plan and avoid procrastination.
- Stay motivated by setting achievable goals, rewarding yourself for milestones achieved, and maintaining a positive mindset throughout your preparation period.

Remember, effective retention of knowledge requires consistent effort, active learning, and regular revision. By following these strategies, you can effectively retain the knowledge of topics with higher weightage and excel in your CA Intermediate preparation.