Core engineering
Chemical Engineering
From material balances to reactor design and process control — and the plant careers that follow.
Core subjects with Aria
Read the notes, or pick a subject and Aria teaches it from the basics, with the formula first, units checked, and numericals worked step by step.
Process Calculations
Units, stoichiometry, material balances, energy balances, recycle
Fluid Mechanics
Fluid statics, Bernoulli, pipe flow, pumps, flow meters
Mechanical Operations
Size reduction, screening, filtration, sedimentation, mixing, conveying
Chemical Engineering Thermodynamics
Laws of thermodynamics, property relations, fugacity, phase and reaction equilibria
Chemical Technology
Inorganic chemicals, fertilisers, petroleum refining, petrochemicals, polymers
Heat Transfer
Conduction, convection, radiation, heat exchangers, evaporators
Mass Transfer
Diffusion, interphase transfer, distillation, absorption, extraction, drying
Chemical Reaction Engineering
Kinetics, ideal reactors, multiple reactions, RTD, catalytic reactors
Process Equipment Design
Pressure vessels, storage tanks, heat exchanger and column mechanical design
Process Instrumentation and Control
Measurements, transfer functions, feedback control, stability, controller tuning
Plant Design and Economics
Cost estimation, depreciation, profitability, optimisation, plant layout, safety
GATE CH preparation
The GATE CH paper covers engineering mathematics, general aptitude and the subjects above. Take timed mocks marked the way GATE marks, or practise any subject with Aria.
PSUs, government jobs and core placements
Many PSUs shortlist engineers through GATE scores; others run their own exams. Recruiting PSUs, cut-offs and eligibility change every year — always check the official notification.
PSUs that have recruited through GATE
Indian Oil Corporation Limited (IOCL) · Oil and Natural Gas Corporation (ONGC) · Bharat Petroleum Corporation Limited (BPCL) · Hindustan Petroleum Corporation Limited (HPCL) · GAIL (India) Limited · Engineers India Limited (EIL) · NTPC Limited · National Fertilizers Limited (NFL) · Bhabha Atomic Research Centre (BARC)
Other exams
- BARC OCES/DGFS (Chemical Engineering)
- DRDO Scientist 'B' recruitment (Chemical Engineering)
- State Pollution Control Board recruitment (e.g. MPCB Field Officer)
Core companies
Reliance Industries · Tata Chemicals · UPL · Aarti Industries · Deepak Nitrite · Asian Paints · Hindustan Unilever · Pidilite Industries · SRF Limited · Thermax
Switch to IT
Plenty of Chemical graduates get software jobs — service companies hire from every branch. This is the order that works when you haven't coded much.
- 1Aptitude first Every service company tests it before anything else.
- 2One language, properly Java from the basics, with Aria when you are stuck.
- 3DSA, pattern by pattern The problems that actually get asked, in order.
- 4SQL 240 problems on real schemas — a common test round.
- 5Your resume Import it, get an ATS check, fix weak bullets.
- 6Mock interviews Practise the interview before the interview.