RRB JE Chemical Engineering Syllabus

The RRB JE Chemical Engineering discipline section tests knowledge at the Diploma and Degree level across fluid mechanics, heat and mass transfer, chemical reaction engineering, process control, and chemical technology. It carries 100 questions and 100 marks in CBT 2. Chemical Engineering posts in Indian Railways relate to the Chemical and Metallurgical Assistant (CMA) role covering testing of materials, chemicals, and fuels used in railway operations, as well as chemical treatment of water supply for railway workshops and stations.

Quick Facts: JE Chemical Engineering

Detailed Chemical Engineering Syllabus

1. Engineering Mathematics and Numerical Methods

•        Linear Algebra: matrix operations; determinants; eigenvalues; systems of linear equations

•        Calculus and Differential Equations: differentiation; integration; partial derivatives; ODEs (first order, second order with constant coefficients); Laplace transforms

•        Probability and Statistics: mean; variance; distributions; regression; statistical quality control

•        Numerical Methods: Newton-Raphson; Euler and Runge-Kutta methods; numerical integration

2. Process Calculations and Thermodynamics

•        Stoichiometry: units and dimensions; molar mass; mole fraction; mass fraction; limiting and excess reactant; yield and conversion; recycle and bypass

•        Material Balances: steady-state and unsteady-state material balances with and without chemical reactions; tie components

•        Energy Balances: first law applications; Hess's law; heat of reaction; heat of formation; heat capacity; adiabatic reactions; steady-state energy balance

•        Thermodynamics: PVT relationships; ideal gas; equation of state (van der Waals, Redlich-Kwong, Peng-Robinson); enthalpy, entropy, and Gibbs free energy; activity and fugacity; phase equilibria (VLE, LLE); Raoult's and Henry's laws; solution thermodynamics (activity coefficients, Margules, van Laar, Wilson equations); chemical equilibrium; thermodynamic analysis of processes (availability and exergy)

3. Fluid Mechanics and Mechanical Operations

•        Fluid Statics: pressure measurement; manometers; forces on submerged surfaces; buoyancy

•        Fluid Flow: Reynolds number; continuity equation; Bernoulli equation; modifications (Fanning friction factor, equivalent length); Hagen-Poiseuille equation; turbulent flow; friction factor charts (Moody); pipe sizing

•        Pumps and Compressors: centrifugal pump (characteristic curves; NPSH; cavitation; priming; specific speed); reciprocating pump; centrifugal compressor; reciprocating compressor; compressor work; poly-tropic and isentropic efficiency

•        Fluid Metering: venturimeter; orifice meter; rotameter; weir and notch; pitot tube; Coriolis flowmeter

•        Mechanical Operations: size reduction (crushers, grinders, mills); size classification (screens, classifiers, hydrocyclone); filtration (plate-and-frame, rotary drum filter, filter press); centrifugation; sedimentation (Stokes' law, settling tanks); mixing (impeller types; power correlations; mixing time)

4. Heat Transfer

•        Conduction: Fourier's Law; steady-state and unsteady-state; plane wall; cylinder; sphere; composite walls; critical thickness of insulation; fins

•        Convection: Newton's Law of Cooling; dimensional analysis; Nusselt number correlation; forced convection (inside tube, outside tube, over flat plate); free (natural) convection; boiling and condensation heat transfer coefficients

•        Radiation: Stefan-Boltzmann Law; emissivity; view factors; radiation between surfaces

•        Heat Exchangers: parallel flow; counter flow; shell-and-tube; double pipe; plate; spiral; LMTD method; NTU-effectiveness method; fouling factors; rating and sizing; heat exchanger selection

•        Evaporation: types of evaporators; single-effect and multiple-effect evaporation; economy and capacity; boiling point rise; steam economy calculation; falling-film and forced-circulation evaporators

5. Mass Transfer

•        Diffusion: Fick's Law; equimolar counter-diffusion; diffusion of A through stagnant B; diffusivity in gases and liquids

•        Absorption: equilibrium relationships; mass transfer coefficient; film theory; penetration theory; overall mass transfer coefficients; design of packed towers (height of transfer unit, number of transfer units); flooding and loading

•        Distillation: vapour-liquid equilibrium; Raoult's Law; relative volatility; McCabe-Thiele method (binary distillation); reflux ratio (minimum and operating); feed plate location; Kremser equation; azeotropic distillation; extractive distillation; column internals (plates, packings)

•        Liquid-Liquid Extraction: solvent selection; triangular phase diagrams; extraction factor; design of extraction columns; mixer-settler

•        Adsorption: equilibrium isotherms (Langmuir, Freundlich, BET); fixed bed adsorber; breakthrough curve; pressure swing adsorption

•        Drying: psychrometry; drying rate curves; constant and falling rate periods; dryer types (rotary, spray, fluidised bed, tray, freeze dryer); time for drying calculations

•        Leaching: solid-liquid extraction; countercurrent washing; underflow ratio

•        Humidification and Dehumidification: psychrometric chart; dew point; wet bulb temperature; cooling towers (heat and mass balance)

6. Chemical Reaction Engineering

•        Introduction: rate of reaction; Arrhenius equation; activation energy; elementary and non-elementary reactions; reaction order; rate expression

•        Ideal Reactors: batch reactor (design equation, variable volume); CSTR (design equation; material and energy balance); PFR (design equation; variable volume); comparison of CSTR and PFR; levenspiel plots

•        Reactor Combinations: CSTRs in series; mixed reactor sequences; optimum CSTR size for multiple reactors

•        Non-Ideal Flow: residence time distribution (RTD); E, F, and C curves; tanks-in-series model; dispersion model; macro and micro mixing

•        Multiple Reactions: series, parallel, and series-parallel reactions; selectivity and yield; point and overall selectivity; temperature effects on selectivity; optimum temperature progression

•        Fluid-Solid Reactions: unreacted shrinking core model; progressive conversion model; effectiveness factor; internal and external mass transfer effects; Thiele modulus; gas-solid reactions

•        Catalysis: types of catalysts; adsorption; Langmuir-Hinshelwood mechanism; catalyst deactivation; fixed bed; moving bed; fluidised bed reactors for heterogeneous catalysis

•        Polymerisation Reactors: addition and condensation polymerisation; degree of polymerisation; free radical kinetics; CSTR and PFR for polymerisation

7. Process Control

•        Introduction: open and closed loop control; block diagram; transfer function; Laplace domain; feedback and feedforward control

•        Process Modelling: transfer functions of common process elements; linearisation of nonlinear systems; interacting and non-interacting systems

•        Feedback Control: P, PI, PD, PID controllers; tuning (Ziegler-Nichols, Cohen-Coon); controller modes; integral windup

•        Stability Analysis: characteristic equation; Routh-Hurwitz criterion; root locus; Bode diagram; Nyquist criterion; gain and phase margins

•        Advanced Control: ratio control; cascade control; feedforward control; override control; inferential control

•        Instrumentation: sensors for temperature (thermocouple, RTD, thermistor); pressure (Bourdon tube, pressure transducer); flow (orifice, venturimeter, magnetic, Coriolis); level (float, differential pressure, ultrasonic, radar); pH and analysers

•        Control Valves: types (globe, butterfly, ball, diaphragm); valve characteristics (linear, equal percentage, quick opening); Cv; cavitation; flashing; sizing

•        Distributed Control System (DCS): PLC; SCADA; HMI; fieldbus (HART, PROFIBUS, Foundation Fieldbus, Modbus)

8. Chemical Technology and Industrial Chemistry

•        Fuels and Combustion: classification; calorific value; flue gas analysis; pulverised coal combustion; gasification; liquefaction; petroleum refining (distillation, cracking, reforming, isomerisation, alkylation)

•        Fertiliser Industry: ammonia synthesis (Haber process); urea manufacture; superphosphate; complex fertilisers; NPK

•        Polymer Industry: polymerisation types; production of PE, PP, PVC, PET, nylon, polyester; rubber (natural and synthetic)

•        Cement and Glass: wet and dry process for cement; chemistry of clue and setting; types of cement; glass composition and manufacturing

•        Sulphuric Acid: contact process; lead chamber process; oleum; uses

•        Chlor-alkali Industry: electrolysis of brine; chlorine; caustic soda; soda ash (Solvay process)

•        Paint and Varnish: composition; types; testing; application methods

•        Water Treatment: impurities in water; hardness (temporary and permanent); softening (lime-soda, zeolite, ion exchange, RO); coagulation and flocculation; filtration; disinfection; industrial effluent treatment (ETP, STP); waste water standards; Indian Standards

•        Pharmaceutical Basics: GMP; batch records; quality control; API synthesis concepts

•        Food Technology: food preservation methods; food additives; fermentation; HACCP

9. Metallurgy and Materials (Railway-Relevant)

•        Iron-Carbon Phase Diagram: phases; eutectic; eutectoid; hypo and hypereutectoid steels; lever rule

•        Heat Treatment of Steel: annealing; normalising; hardening; tempering; martempering; austempering; case hardening (carburising, nitriding, flame hardening, induction hardening)

•        Non-Ferrous Metals: aluminium and alloys; copper and alloys (brass, bronze); tin; lead; nickel; titanium

•        Testing of Materials: tensile test; hardness test (Brinell, Vickers, Rockwell); impact test (Charpy, Izod); fatigue; creep; NDT methods (UT, RT, MT, PT, ET, VT)

•        Corrosion: types; galvanic series; electrochemical corrosion mechanism; corrosion control methods (coatings, cathodic protection, inhibitors, material selection)

•        Railway Materials Testing: testing of rails for hardness, tensile strength, chemistry; testing of sleepers; testing of lubricants and greases; testing of fuels (diesel, CNG) for railway locomotives

10. Safety, Health, and Environment (Chemical Industry)

•        Chemical Hazards: MSDS; flash point; fire point; auto-ignition temperature; LEL and UEL; toxicity (LD50, TLV, IDLH)

•        Industrial Hazards: fire and explosion; toxic release; dust explosion; runaway reaction; BLEVE; HAZOP study; fault tree analysis

•        Personal Protective Equipment: respirators; face shield; chemical resistant gloves and suits; safety shoes

•        Environmental Regulations: Factories Act 1948; MSIHC Rules 1989; Environment Protection Act 1986; Water Act 1974; Air Act 1981; Hazardous Waste Management Rules

Physics and Chemistry (15 Questions -- Class 12 / Diploma Level)

This section tests applied science knowledge at Class 12 and engineering diploma level. Key topics include:

•        Physics: Units and Measurement; Scalars and Vectors; Kinematics; Laws of Motion; Work, Energy and Power; Circular Motion; Gravitation; Properties of Matter (Elasticity, Viscosity, Surface Tension); Thermodynamics and Heat Transfer; Wave Motion and Sound; Electrostatics (Coulomb's Law, Electric Field, Potential); Current Electricity (Ohm's Law, Kirchhoff's Laws, Wheatstone Bridge); Magnetic Effects of Current; Electromagnetic Induction (Faraday's Law, Lenz's Law); Optics (Laws of Reflection and Refraction, Lenses, Mirrors, Optical Instruments); Modern Physics (Photoelectric Effect, Radioactivity, Nuclear Reactions)

•        Chemistry: Atomic Structure and Periodic Table; Chemical Bonding (Ionic, Covalent, Metallic); States of Matter and Gas Laws; Chemical Equilibrium and Le Chatelier's Principle; Acids, Bases, Salts and pH; Electrochemistry (Electrolysis, Galvanic Cells, Faraday's Laws); Thermochemistry; Chemical Kinetics; Corrosion and Prevention; Polymers (Natural and Synthetic); Fuels and Combustion; Environmental Chemistry

Basics of Computer Applications (10 Questions)

•        Computer Organisation: CPU, memory types (RAM, ROM, Cache), storage devices, input-output devices

•        Operating Systems: functions, types (Windows, Linux, Unix), file systems, process management

•        MS Office: Word (document formatting, tables, mail merge), Excel (formulae, charts, functions), PowerPoint (slide design, transitions)

•        Internet and Networking: types of networks (LAN, WAN, MAN), protocols (TCP/IP, HTTP, FTP, SMTP), IP addressing, DNS, cloud computing basics

•        Database Fundamentals: concept of database, RDBMS, SQL basics (SELECT, INSERT, UPDATE, DELETE), keys and relationships

•        Programming Concepts: flowcharts and algorithms, pseudocode, basic C language concepts (data types, control structures, functions, arrays)

•        Cybersecurity Basics: common threats (virus, malware, phishing), firewall, antivirus, data encryption basics

•        Digital Logic: binary, octal, hexadecimal number systems; logic gates (AND, OR, NOT, NAND, NOR, XOR); Boolean algebra basics

Environment and Pollution Control (10 Questions)

•        Environment: ecosystem components (biotic and abiotic), food chains and food webs, biogeochemical cycles (carbon, nitrogen, water)

•        Air Pollution: pollutants (SOx, NOx, CO, PM2.5, PM10, VOCs), sources, health effects, standards and control measures; vehicular emission norms (BS VI)

•        Water Pollution: sources, pollutants, effects on aquatic life and human health; treatment methods (primary, secondary, tertiary); BOD, COD, DO concepts

•        Soil Pollution: sources, effects, remediation techniques; land degradation and restoration

•        Noise Pollution: sources, health effects, standards (WHO and CPCB), control measures

•        Solid Waste Management: types of waste, 3R principle (Reduce, Reuse, Recycle), composting, sanitary landfill, incineration

•        Radioactive Waste: types of radiation, health effects, AERB regulations, storage and disposal

•        Environmental Legislation: Environment Protection Act 1986; Air (Prevention and Control of Pollution) Act 1981; Water (Prevention and Control of Pollution) Act 1974; National Green Tribunal (NGT); Environmental Impact Assessment (EIA)

•        Indian Railways and Environment: ISO 14001 certification in railways, green initiatives, bio-toilets, solar energy on railways, plastic-free stations

•        Climate Change: greenhouse gases, global warming, Kyoto Protocol, Paris Agreement, India's NDC commitments