Indian Air Force invites online applications from eligible male candidates to appear in the online test for merit based selection of airmen in Group X (Technical) trades and Group Y (Non Technical) trades. Exam for Group X trades will comprise of English, physics and maths as per 10 plus 2 CBSE pattern and exam for Group Y will comprise of English, reasoning and general awareness as per the guidelines.Present book is comprehensively devised to meet the complete preparation needs of Indian Air Force X and Y Group (Technical and Non- Technical Trades) Online Test, according to the latest test model. The book provides complete section wise coverage of the syllabus in 5 sections. Each section is further divided into logical topic heads with sufficient explanations and ample number of practice questions for conceptual clarity and clear understanding.Enclosed with 3 practice sets, which are also available for free online practice on web plus mobile the book will allow candidates to self-evaluate their preparation and make them comfortable with the online test model. Table of contentsGeneral English, physics, mathematics, reasoning and mathematical ability, general awareness3 Practice sets.