New Delhi: Over 15 lakh candidates are expected to appear in medical entrance exam NEET on Sunday which will be conducted amid strict precautions in view of the COVID1-9 pandemic, according to officials of the National Testing Agency (NTA).In order to maintain social distancing, the NTA has increased the number of exam centres from originally-planned 2,546 to 3,843, while the number of candidates per room has been reduced from earlier 24 to 12.The crucial National Eligibility-cum-Entrance Test (NEET), which is a pen and paper based test unlike engineering entrance exam JEE, has already been deferred twice in view of the COVID-19 pandemic.The exam was originally scheduled for May 3, but was pushed to July 26, and then to September 13.A total.