Sweta, at this point in time, according to the official press release https://icar.nta.nic.in/Webinfo/Handler/FileHandler.ashx?i=File&ii=339&iii=Y , the last date for filling the application forms is April 30th and there is no mention of any possible extension and so we are unaware whether the last date will be extended or not. This statement has been dated as on March 30th while the Country was in lockdown. But now as it has been extended until May 3rd, the chances of the last date being extended are 50-50. So try filling the application form by visiting the official [age at; https://icar.nta.nic.in/WebInfo/Public/Home.aspx . In case the last date for registration is not extended, you might not be able to appear for the exam.