Both online quizzes and practice from previous year question papers can be beneficial for revising commerce subjects. It ultimately depends on your personal learning style and preferences.

Online quizzes can provide immediate feedback and help you identify areas of weakness. They are often designed to be interactive and engaging, making the learning process more enjoyable. Additionally, online quizzes can cover a wide range of topics and offer a variety of question formats, which can help you become familiar with different types of questions that may appear in exams.

On the other hand, practicing from previous year question papers allows you to get a feel for the actual exam format and difficulty level. It helps you understand the exam pattern and the types of questions that are frequently asked. By solving previous year question papers, you can also identify common themes and important topics that are likely to be covered in the upcoming exams.

In summary, a combination of both online quizzes and practicing from previous year question papers can be an effective approach to revise for commerce subjects. You can use online quizzes for regular practice and to reinforce concepts, while also dedicating time to solving previous year question papers to gain familiarity with the exam format and identify areas of improvement.