There is a need for more videos in the Chemistry Class 12 course as there are currently very few videos available and not all topics of all chapters are covered. Adding more videos and covering all topics in these videos will greatly enhance the understanding of the subject for students.

Benefits of adding more videos in the Chemistry Class 12 course:

1. Enhanced understanding: Videos are a visual medium that can help students grasp complex concepts more easily. By adding more videos, students will have a better understanding of the topics covered in the course.

2. Visual representation: Videos can provide a visual representation of experiments, reactions, and concepts, which can be difficult to understand through text alone. Visual aids can make learning more engaging and memorable.

3. Step-by-step explanations: Videos can provide step-by-step explanations of various concepts, making it easier for students to follow along and understand the process. This can be particularly helpful in subjects like Chemistry, where certain concepts require a sequential understanding.

4. Reinforcement of learning: Videos can serve as a tool for reinforcing what students have learned in the classroom. By watching videos that cover the topics discussed in class, students can solidify their understanding and clarify any doubts they may have.

5. Accessibility: Videos can be easily accessed online, allowing students to watch them at their own convenience. This flexibility enables students to revisit the videos whenever they need to revise a particular concept or topic.

To ensure better understanding and coverage of all topics, it is important to add videos for all chapters in the Chemistry Class 12 course. The videos should be comprehensive, providing explanations for all the key topics within each chapter. Additionally, the videos should be visually appealing, with clear audio and visual quality.

By incorporating these additional videos into the course, students will have a more comprehensive and engaging learning experience, ultimately leading to a better understanding of the subject matter.