The all-India exam was cancelled after a committee found mistakes in the printed papers, IMS director Prof Rana Gopal Singh said.
The question paper was printed in four sets in Hindi as well as English carrying 180 questions. According to students, each question had four options including one correct answer. The students have claimed that the correct answer was printed in light shade while rest of the paper was printed in black colour normally.
The committee was formed following allegations by candidates who appeared for the exam that there were irregularities in the multiple choice answers printed on question papers given to them.
After the examination, most of the students discussed about noticing the similar trend, they went to see the director of IMS, Dr RG Singh. Some students also staged sit-in-stir in front of vice chancellor's residence.
The examination will now be conducted on August 4.