PhD is a Doctorate of Philosophy which is basically a research based degree. PhD in Polymer Science & Technology deals with the research studies related to Polymer science, its various application and improvements in advanced technologies.
All post graduates are eligible for this course. Minimum qualifying marks may vary from institute to institute and specific information can be obtained from their particular websites.
For PhD. admissions, the procedure is not same for all. There are some institutes, which are offering admission to candidates who have qualified national level entrance tests with excellent ranks. Some institutes conducts their own entrance tests and even some institute take students for projects and then in later stage, they allowed them to register for their PhD.
The course duration is not very much restricted and flexibility is there in some conditions. If the research is sponsored, then the scholarships may be affected in case of prolonged work.