Yes, you can qualify for IIT JAM Chemistry even if you have taken a gap year after graduation.

1. Eligibility Criteria for IIT JAM Chemistry:
To be eligible for the IIT JAM Chemistry exam, you need to fulfill certain criteria:
- You must have a Bachelor's degree in any discipline from a recognized university.
- There is no minimum percentage requirement in the qualifying degree for general/OBC-NCL category candidates. However, SC/ST/PwD category candidates must have obtained at least 50% marks or 5.5 out of 10 CGPA.
- There is no age limit to appear for the exam.

2. Preparation Strategy:
Taking a gap year after graduation can provide you with ample time to prepare for the IIT JAM Chemistry exam. Here are some steps to follow:

- Create a Study Plan: Make a comprehensive study plan covering all the topics and allocate sufficient time for each subject. This will help you stay organized and cover the entire syllabus effectively.
- Understand the Syllabus: Familiarize yourself with the IIT JAM Chemistry syllabus. Identify the topics you are strong in and those that require more attention. Focus on strengthening your weak areas.
- Refer to Standard Books: Use recommended textbooks and study materials to prepare for each topic. Some popular books for IIT JAM Chemistry include "Organic Chemistry" by Morrison and Boyd, "Physical Chemistry" by P. Bahadur, and "Inorganic Chemistry" by J.D. Lee.
- Practice Previous Year Question Papers: Solve previous year question papers and sample papers to get an idea of the exam pattern and difficulty level. This will also help you identify your weak areas and work on them.
- Take Mock Tests: Regularly take mock tests to assess your preparation level. This will help you improve your time management skills and get familiar with the exam environment.
- Seek Guidance: If required, join coaching classes or seek guidance from experienced faculty members or mentors who can provide you with valuable insights and tips for the exam.

3. Stay Motivated:
Preparing for a competitive exam like IIT JAM Chemistry requires consistent effort and dedication. Here are some tips to stay motivated during your preparation:

- Set Achievable Goals: Break your preparation into smaller goals and celebrate each milestone you achieve. This will keep you motivated and focused.
- Stay Positive: Surround yourself with positive and supportive people who encourage your goals. Avoid negative influences that may demotivate you.
- Take Breaks: It is important to take regular breaks to relax and rejuvenate. Engage in activities you enjoy to avoid burnout.
- Visualize Success: Visualize yourself successfully qualifying for IIT JAM Chemistry and getting admission into your desired institute. This positive visualization can boost your confidence and motivation.

Conclusion:
Taking a gap year after graduation should not hinder your chances of qualifying for IIT JAM Chemistry. With proper planning, dedication, and consistent effort, you can effectively utilize this time to prepare for the exam and achieve your goal. Stay focused, follow a structured study plan, and stay motivated throughout your preparation journey.