https://nelsonmcbs.com/2020/05/25/new-ldc-syllabus-%e0%b4%a8%e0%b4%ae%e0%b5%8d%e0%b4%ae%e0%b5%81%e0%b4%9f%e0%b5%86-ldc-%e0%b4%b8%e0%b4%bf%e0%b4%b2%e0%b4%ac%e0%b4%b8%e0%b5%8d-rank-maker-psc-tips-sujesh-purakkad/