"Competitive examinations are required to be conducted by the Commission for public service in strict secrecy to get the best brain. Public interest requires no compromise on it. Any violation of it should be visited strictly. Absence of any expectation of hearing in matters which do not affect any interest and call for immediate action, such as the present one, where it would have delayed declaration of list of other candidates which would have been more unfair and unjust are rare but well recognised exceptions to the rule of natural justice. It cannot be equated with where a student is found copying in the examination or an inference arises against him for copying due to similarity in answers of number of other candidates or he is charged with misconduct or misbehavior. Direction not to write roll number was clear and explicit. It was printed on the first page of every answer book. Once it was violated the issue of bonafide and honest mistake did not arise. Its consequences, even, if not provided did not make any difference in law. The action could not be characterised as arbitrary. It was not denial of equal opportunity. The reverse may be true."