NCERT books from 10-12 are especially Important for Civil Service Exam General Studies esp. of History, Geography, Economics and General Science. I'm Posting all of them right from Class 3rd to 12th. Class12th Accountancy BusinessStudies Mathematics Biology Chemistry Physics Economics Hindi English History Geography PoliticalScience Psychology Sociology Class11th BusinessStudies Accountancy Mathematics Biology Chemistry Physics Economics Hindi English Geography History PoliticalScience Psychology Sociology Statistics Class10th English Hindi Mathematics Science SocialScience Class 9th English Hindi Mathematics Science SocialScience Class 8th English Hindi Mathematics Science SocialScience Class7th English Hindi Mathematics Science SocialScience Class 6th English Hindi Mathematics Science SocialStudies Class 5th English Hindi EnvironmentalStudies Mathematics Class 4th English Hindi EnvironmentalStudies Mathematics Class 3rd English Hindi EnvironmentalStudies Mathematics