1. Prelims exam Paper II :

General Studies Paper-II of Civil Services (Preliminary) Examination - 200 marks ( qualifying in nature - 33% i.e.,  66 marks is enough to qualify this exam )

Prelims Exam Syllabus :

Paper II

1.Comprehension
2.Interpersonal skills including communication skills
3.Logical reasoning and analytical ability
4.Decision making and problem-solving 
5.General mental ability
6.Basic numeracy (numbers and their relations, orders of magnitude, etc.) (Class X level), Data interpretation (charts, graphs, tables, data sufficiency, etc. — Class X level)

Reference books for civil service prelims exam :

Textbooks of Paper II (CSAT) for IAS prelims 👇🏻

1. Verbal & Non - Verbal Reasoning :

2. Quantitative Aptitude book 1 :

3. Quantitative Aptitude book 2 :

4. Reading Comprehension :

5. Best book to learn Vocabulary  :