I would like to suggest you do online practice through latest NIACL Mock Test along with triky solution and I 'm also providing you Syllabus related to NIACL Exams.....
https://www.prep.youth4work.com/Government-Jobs/NIACL-Prelim-Exam-TestExam Syllabus English section- Comprehension, Error Spotting, Vocabulary, Fill in the blanks, etc. Reasoning section- Arrangements & Patterns, Coding, Decoding, Syllogisms, Series, Blood Relations, etc. Quantitative section - DI, Data Sufficiency, Series, Miscellaneous.