Yes, you can definitely attempt previous year's GATE CE question papers chapter-wise for targeted practice. Here is how:

1. Understand the Importance: Practicing previous year's question papers is crucial for GATE preparation as it helps you understand the exam pattern, the type of questions asked, and the level of difficulty. It also helps you identify your strengths and weaknesses in different chapters.

2. Identify Chapters: Start by identifying the chapters or topics that are important for the GATE CE exam. Refer to the syllabus and mark the chapters that have a higher weightage or are frequently asked in the exam.

3. Collect Previous Year's Papers: Gather the previous year's GATE CE question papers. You can find them on the official GATE website or other reliable sources like EduRev.

4. Divide Chapters: Divide the question papers chapter-wise according to the topics you have identified. This will help you focus on specific chapters and improve your understanding and problem-solving skills in those areas.

5. Solve Chapter-wise: Start solving the questions from the first chapter you have chosen. Read the questions carefully and try to solve them without looking at the solutions. This will help you assess your knowledge and identify areas where you need improvement.

6. Review and Analyze: Once you have completed solving the chapter-wise questions, review your answers and compare them with the provided solutions. Analyze your mistakes and understand the concepts or methods you missed. Make notes of the important points or formulas you come across.

7. Repeat for Other Chapters: Move on to the next chapter and repeat the process. Practice questions from different chapters, giving more time to the ones you find difficult. This will help you cover all the important topics and strengthen your overall preparation.

8. Track Progress: Keep track of your progress by maintaining a record of the questions you have attempted and the scores you have achieved. This will help you monitor your improvement and identify areas that still need work.

9. Time Management: While practicing chapter-wise, try to simulate the actual exam conditions by setting a time limit for each set of questions. This will help you improve your speed and efficiency in solving problems.

10. Revision: Once you have completed practicing all the chapters, revise the topics and questions you found difficult. Focus on strengthening your weak areas and clarifying any doubts you may have.

By following this approach of attempting previous year's GATE CE question papers chapter-wise, you can effectively target your practice and improve your chances of scoring well in the exam.