Answer:

Downloading the answer key for IIT JAM Chemistry using your registered mobile number or email ID is not possible. The answer key for the IIT JAM Chemistry exam is not provided directly to individual candidates, but it is usually released by the conducting body (IIT) on their official website. Here is a detailed explanation of the process:

1. Official Release:
- The conducting body, IIT, releases the answer key for IIT JAM Chemistry on their official website.
- They usually upload the answer key a few days after the completion of the examination.
- The answer key is made available for all candidates who appeared for the exam.

2. Accessing the Answer Key:
- To access the answer key, candidates need to visit the official website of IIT or the official website of the exam conducting body.
- Look for the notification or link related to the answer key.
- The link or notification is usually displayed prominently on the homepage or the examination section of the website.

3. Logging In:
- Once you find the link or notification related to the answer key, click on it.
- You may be asked to log in using your credentials, such as your registered mobile number or email ID, along with a password.
- This login process ensures that only the registered candidates can access the answer key.

4. Downloading the Answer Key:
- After logging in, you will be redirected to a page where the answer key is available.
- The answer key is usually provided in a PDF format.
- Click on the download button or link to save the answer key file to your device.

5. Matching the Answers:
- Once you have downloaded the answer key, you can open it and compare your answers with the ones provided in the key.
- This helps you in estimating your score and evaluating your performance in the examination.

Note: It is important to rely on the official answer key provided by the conducting body rather than any unofficial answer keys available on various websites. The official answer key is considered the most accurate and reliable source for evaluating your performance in the IIT JAM Chemistry exam.

To summarize, the answer key for IIT JAM Chemistry is not directly downloadable using your registered mobile number or email ID. It is released by the conducting body on their official website, where you can log in with your credentials and download the answer key in PDF format for further evaluation.