Odisha School and Mass Education Minister Debi Prasad Mishra on Wednesday asked the Controller of Examinations of the CHSE to probe into irregularities during the annual Plus-II mathematics paper.Mr Mishra said that questions on chemistry were found in the mathematics question paper packets when they were opened for distribution among examinees yesterday. Chemistry question papers in mathematics question paper packets were found at least in 14 examination centres, he said adding that the press, where the question papers were printed, would come under the purview of probe. “The government would not hesitate to black-list the printing press if it was found guilty,” Mr Mishra said adding that the Controller of Examinations of the Council of Higher Secondary Examination (CHSE) will probe under which circumstances the chemistry questions entered into the mathematics question paper packets. “The Controller of Examinations will also investigate whether there was any conspiracy,” Mr Mishra said. He said the Controller of Examinations has been asked to submit a report within two weeks. The official will visit the press where the question papers were printed and packed, he said. The irregularities which were detected across 14 examination centres had delayed the examination. However, the centres managed to conduct the examination after providing photo copies of the mathematics questions to the students.Mr Mishra said that the chemistry examination which was earlier scheduled for March 16 afternoon will now be conducted between 2 pm and 5 pm on March 30.