Reporting Time:
The reporting time mentioned on the IIT JAM Chemistry admit card is the time at which candidates are required to arrive at the examination center. It is important to reach the center on time to complete the necessary formalities before the start of the exam. The reporting time is usually mentioned on the admit card to avoid any confusion and ensure a smooth conduct of the examination.

Exam Duration:
The exam duration mentioned on the IIT JAM Chemistry admit card refers to the total time allotted for completing the examination. It includes the time for both the sections of the exam - Part A and Part B. The duration mentioned on the admit card is usually in hours and minutes format, specifying the total time candidates will have to complete the paper.

Importance of Reporting Time:
The reporting time is crucial as it allows candidates to complete the necessary formalities such as verification of admit card, identity proof, and biometric registration. It also provides a buffer time for candidates to settle down before the exam begins. Candidates who arrive late may not be allowed to enter the examination hall, resulting in disqualification.

Importance of Exam Duration:
The exam duration is important as it determines the time available for candidates to answer the questions in the paper. It is essential for candidates to manage their time effectively and allocate sufficient time to each section of the exam. Understanding the exam duration helps candidates plan their approach to the paper and ensure they complete all the questions within the allotted time.

Key Points:
- The reporting time mentioned on the IIT JAM Chemistry admit card is the time at which candidates are required to arrive at the examination center.
- The exam duration mentioned on the admit card refers to the total time allotted for completing the examination.
- Reporting on time is crucial to complete the necessary formalities before the start of the exam.
- The exam duration determines the time available for candidates to answer the questions in the paper.
- Candidates should plan their approach and manage their time effectively to complete all the questions within the allotted time.