Query about change in educational qualification for the same post

Sir, india meteorological department is conducting recruitment of scientific assistant and the minimum qualification is Bachelor’s Degree in Science (with Physics as one of the subject)/ Computer Science/Information Technology/ Computer Applications OR Diploma in Electronics and Telecommunication Engineering from a recognized Institution/University or equivalent. NOTE-I The qualifying Degree or diploma referred above should be in First Class (60% marks) or 6.75 CGPA on a 10 point scale. NOTE-II The qualifying Degree or Diploma referred above must be of three (3) years duration after (10+2) examination. NOTE-III The applicant must have passed 10+2 Examination from a Recognized Board or equivalent in Science with Physics and Mathematics as core subjects. last time they conducted recruitment for the same post with the same edu qualification and they larified that even though btech in electronics and communication is a 4year degree they are eligible in lieu of Diploma in Electronics and Telecommunication Engineering and almost 50% selected where from ece. But this time they are saying they only want diploma and btech ece is overqualification at the same time they are allowing btech in computer science &it(in the name of Bachelor’s Degree) which are also same professional degree of 4 years like btech in ece isn't violation of fundamental right of equality,can we win a case on this background