Petitioner is holding the post of Chief Veterinary Officer, which is a Class II post and the next post to which he could look for ward is Class I post, which includes the post of Deputy Director. The strength of Class I service, according to the petitioner, is 61, whereas according to some of the respondents, it is 62. The quota reserved for Scheduled Castes for promotion is 18% and for Scheduled Tribes, it is 2%. It is admitted case of both the parties that 12 Scheduled Castes candidates have already been promo ted to Class I posts from the quota reserved for them. In this manner the Scheduled Caste candidates are already having 18% posts of Class I. In this cadre 22 posts are vacant on account of which respondents have constituted a Departmental Promotion Committee (hereinafter referred to as the D. P. C.) for selecting the candidates for promotion. The D. P. C. has ear-marked 4 out of 22 vacancies for Scheduled Castes candidates and the remaining 18 vacancies are to be filled by the candidates of general category. It also appears that the D. P. C. has already made selection of 4 Scheduled Castes candidates, who have been arrayed as respondents to this writ petit