Hi kumkum, 

as per the website : https://medicine.careers360.com/articles/jipmer-mbbs-exam-pattern

JIPMER MBBS 2018 will be held on June 3, 2018, as an online Computer Based Test (CBT) of two and a half hour duration. JIPMER MBBS 2018 exam pattern, as released by JIPMER Puducherry, states that JIPMER MBBS exam may either be conducted in one or two shifts depending on the number of applicants, logistics and as per the directions of the Madras High Court. The exam will comprise 200 questions and the syllabus of JIPMER MBBS entrance will be based on Class 11 and 12 portions. Candidates must know two noteworthy features of JIPMER MBBS exam pattern 2018, ie. JIPMER MBBS exam will be conducted in English medium only and there will be negative marking applicable for the first time in JIPMER MBBS 2018 entrance exam. A good understanding of the exam pattern of JIPMER MBBS 2018 will give candidates the knowledge of question distribution, marking scheme, syllabus, etc., thereby helping them to prepare well for the exam. Candidates can read the full article for complete details about JIPMER MBBS 2018 exam pattern, including marking scheme, qualifying marks, syllabus of JIPMER MBBS, etc.

hope this helped ! All the best ! :)