Why is there a high cutoff for CSIR NET Chemical Sciences due to government policy?

I’m curious to understand why there is a high cutoff for CSIR NET (Council of Scientific and Industrial Research National Eligibility Test) Chemical Sciences due to government policy. Specifically, I want to know the reasons behind the high cutoff set for CSIR NET Chemical Sciences, which is influenced by government policies. Understanding the factors or policies contributing to the high cutoff would provide insight into the selection process and how it is regulated. Any detailed insights or explanations regarding this matter would be greatly appreciated.