1. The appeal is by the Kerala Public Service Commission against the judgment of a learned judge in O.P. No. 3088 of 1976 'reported in 1977 KLT. 776. The appellant by a notification dated 2 91975 invited applications for the post of Deputy Superintendent of Police. The recruitment was a special recruitment for Scheduled Caste and Scheduled Tribe, for two vacancies. The writ petitioner applied on 110 1975. A ranked list was prepared by the Commission which was to have effect from 16 11976. Two candidates were advised in the ranked list, one a scheduled caste and the other a scheduled tribe. The advice was on 22-1-1976. The writ petitioner was one of the two candidates advised as rank No. 15 in the list and the first among the scheduled tribes. He joined on 11-3-1976. At the time of his application, he was an Inspector of Central Excise in the Central Excise Office at Vandiperiyar. This fact was not shown either in the application form or in its annexure. For failure to do so, Ex. P1 memo was issued to him to show cause why he should not be permanently debarred from recruitment by the Public Service Commission and why the advice made for his recruitment should not be canc