Marking Scheme for Multiple-Choice Questions (MCQs) in the IIT JAM Mathematics Exam

Introduction:
The IIT JAM (Joint Admission Test for M.Sc.) is a national level entrance exam conducted by the Indian Institutes of Technology to provide admission to postgraduate programs in various IITs and IISc. The Mathematics paper of IIT JAM consists of multiple-choice questions (MCQs) along with few numerical answer type (NAT) questions. In this response, we will focus on the marking scheme specifically for MCQs.

Marking Scheme:
The marking scheme for MCQs in the IIT JAM Mathematics Exam is as follows:

1. Positive Marking:
- Each correct answer carries +1 mark.
- For each question, there may be one or more correct options. In case of multiple correct options, marks are awarded only if all the correct options are selected and no incorrect option is chosen.
- If an incorrect option is selected or any correct option is left unselected, zero marks are awarded for that question.

2. Negative Marking:
- For each incorrect answer, there is negative marking.
- The negative marking is applicable only for MCQs and not for NAT questions.
- The negative marking varies for different sections of the paper.
- Generally, a deduction of 1/3 (or 0.33) marks is made for each incorrect answer.
- If a question is left unanswered, no marks are deducted.

3. Zero Marking:
- If a question has no options or more than one option marked, it is treated as an unanswered question and no marks are awarded or deducted for that question.

4. Total Marks and Qualifying Criteria:
- The maximum marks for the Mathematics paper in IIT JAM is 100.
- The qualifying marks (cut-off) for each category (General/OBC/SC/ST/PwD) are determined by the respective institutes and may vary.
- The final merit list is prepared based on the normalized marks obtained by the candidates.

Conclusion:
The marking scheme for multiple-choice questions (MCQs) in the IIT JAM Mathematics Exam follows a positive marking approach, where each correct answer is awarded +1 mark. However, there is a negative marking of 1/3 (or 0.33) marks for each incorrect answer. It is important for candidates to carefully analyze the options and choose the correct answers to maximize their score. Additionally, candidates should be cautious while selecting multiple correct options, ensuring that all the correct options are chosen and no incorrect option is selected. By understanding the marking scheme, candidates can effectively strategize their approach and increase their chances of scoring well in the exam.