CBT 2 PATTERN: 120 questions, 90 minutes
  Mathematics: 35 questions
  General Intelligence and Reasoning: 35 questions
  General Awareness: 50 questions

CBT 2 IS HARDER: same syllabus but higher difficulty level
  Maths: advanced problems, DI sets, complex calculations
  GK: more specific questions, detailed current affairs

ADVANCED MATHEMATICS:
  Algebra: factorisation, linear equations, quadratic
    a²-b² = (a+b)(a-b) | (a+b)² = a²+2ab+b² | a³+b³ = (a+b)(a²-ab+b²)
  Trigonometry: values of sin/cos/tan at 0,30,45,60,90
    Heights and distances — tan θ = height/base
  Geometry: properties of triangles (congruence, similarity, Pythagoras)
    Circle: angle subtended, tangent properties, chord properties
  Statistics: mean/median/mode | range | standard deviation basics

GENERAL SCIENCE (10th level but detailed):
  Physics: Newton's laws, work/energy/power, heat, light, electricity, magnetism
  Chemistry: atomic structure, periodic table trends, chemical bonding, acids/bases
    Important: pH scale, indicators, common chemical reactions
  Biology: cell structure, nutrition, respiration, excretion, nervous system
    Important: diseases (bacterial, viral, parasitic), vitamins, hormones
    Human body: bones (206), muscles, blood groups, blood composition

RAILWAY SPECIFIC GK:
  History: 1853 (first railway Mumbai-Thane) | 1952 (nationalisation)
    1987 (Indian Railway Catering and Tourism Corp) | Rail Vikas Nigam
  Zones: 18 zones | Southern (oldest) | Metro Railway Kolkata (underground)
  Projects: Dedicated Freight Corridor | High Speed Rail (Mumbai-Ahmedabad)
  Records: Gorakhpur station (longest platform) | Vivek Express (longest route)
  Amenities: 139 (helpline) | IRCTC (e-tickets) | CRIS (IT subsidiary)

TRAFFIC AND TRAIN MANAGEMENT:
  Block instrument operation: instruments used to authorize train movements
  Signal types: fixed (semaphore/colour light) | hand/flag signals
  Point machine: electric/mechanical switches for track routing
  Train passing: loop line | main line | crossing | shunting
  Emergency procedures: accident, signals at danger, train parting

  KEY RAILWAY TERMINOLOGY:
    BPC: Brake Power Certificate (minimum brake required for safe operation)
    TAD: Train Arrival/Departure register
    T/3: Driver's memo for receiving instructions
    TPC: Train Passing Certificate
    MSTR: Movement Statement for Train Running

RULES AND REGULATIONS:
  GR (General Rules) 2019: signalling, train working rules
  SR (Subsidiary Rules): zone-specific operational details
  Accident Manual: response procedures for various accident types
  Punctuality: reasons for delay, responsibility of Station Master