Yes, you can access the IIT JAM Chemistry admit card if you have opted for the exam city change option.

To access the IIT JAM Chemistry admit card after opting for the exam city change option, you need to follow the steps mentioned below:

Step 1: Visit the official website
- Go to the official website of IIT JAM (Joint Admission Test for M.Sc.) which is https://jam.iitk.ac.in/.

Step 2: Click on the Admit Card link
- Look for the "Admit Card" link on the homepage and click on it. This will redirect you to the admit card download page.

Step 3: Login to your account
- To access the admit card, you need to login to your account. Enter your enrollment ID or registered email ID and password in the provided fields.

Step 4: Enter the required details
- After logging in, you may be required to enter additional details such as your date of birth or a security code to verify your identity.

Step 5: Download and print the admit card
- Once you have successfully entered all the required details, you will be able to download your IIT JAM Chemistry admit card.
- Check all the details mentioned on the admit card carefully, including your name, photograph, signature, exam date, time, and venue.
- After verifying all the details, click on the "Download" button to save the admit card on your device.
- It is advisable to take multiple printouts of the admit card for future reference and to avoid any last-minute issues.

Note: It is important to carry a printed copy of the admit card to the examination center along with a valid photo ID proof. Without the admit card, you will not be allowed to enter the examination hall.

Conclusion:
By following the above-mentioned steps, you can easily access and download your IIT JAM Chemistry admit card even if you have opted for the exam city change option. Make sure to keep the admit card safe until the completion of the examination process.