NTA, the exam conducting authority has released the Question Paper & Answer key on the official website. As per the notification released by the exam conducting authority, candidates can challenge the answer key till 16th April 2019. The final answer key of JEE main April session exam will be releasing soon. If candidates want to challenge the answer key, then they have to submit the document as a proof with a fee of rs .1000 for each question. According to our Entrance360 experts, there could be 10 Questions which were wrong , 7 Questions in Physics , 2 Questions in Chemistry and 1 Questions in mathematics .