Aspirants can critique government policies for UPSC exam essays by employing a structured approach that includes analysis and contextual understanding. It is crucial to assess the impact of policies on different societal segments, considering economic, social, and environmental factors. Candidates should support their arguments with data, comparing policies against established benchmarks or best practices. Incorporating diverse perspectives, including those of marginalized communities, enriches the critique. Additionally, articulating recommendations for improvement demonstrates a comprehensive understanding, critical for success in essay-writing components of the UPSC examination.