GATE CH Syllabus 2027 for Chemical Engineering
The GATE CH syllabus for 2027 combines General Aptitude, Engineering Mathematics and core Chemical Engineering. The official pattern assigns 15 marks to General Aptitude, 13 to the paper-specific mathematics and 72 to core topics. Use the latest subject PDF when you compare an older book or course with this year's scope.
CH connects process calculations and thermodynamics to the design of flow systems, exchangers, separators and reactors. The 2027 syllabus also includes state-space models, batch plant scheduling and introductory linear regression and principal component analysis. Mark these explicitly in your plan when you are using older notes.
Table of Contents
GATE CH syllabus by section
Use the official GATE 2027 CH syllabus PDF to check the full scope before committing a topic to your study schedule.
Official section | Topics to check | How to start |
|---|---|---|
Engineering Mathematics | Matrices and eigenvalues, single and multivariable calculus, ODEs and selected PDEs, complex numbers, probability, statistics, numerical methods, regression and PCA. | Solve a linear balance system, then model a first-order response. |
Process Calculations | Steady and transient mass and energy balances for reacting, nonreacting and multiphase systems, plus recycle, purge, bypass and degrees of freedom. | Draw and label each stream. Choose a mass or mole basis before writing equations. |
Thermodynamics | First and second laws, entropy, chemical potential, equations of state, mixture properties, phase and reaction equilibrium. | Compare ideal and nonideal vapour–liquid equilibrium assumptions on the same data set. |
Fluid Mechanics and Mechanical Operations | Fluid statics, rheology, pipe flow, friction, pumps, dimensional analysis, packed and fluidized beds, particle separation, filtration and mixing. | Work pipe-head problems with consistent friction-factor conventions. |
Heat Transfer | Conduction, convection and radiation, plus boiling, condensation, heat exchangers and evaporators. | Choose the resistance path and check the physical direction of heat flow. |
Mass Transfer | Diffusion and transfer coefficients, contacting and efficiency, HTU/NTU, separations such as distillation and absorption, drying and membranes. | Label phases and driving forces before choosing a coefficient. |
Chemical Reaction Engineering | Homogeneous and catalytic kinetics, ideal and nonideal reactors, enzyme reactions, residence time distribution and catalyst deactivation. | Compare ideal reactor designs at the same inlet conditions and conversion. |
Instrumentation and Process Control | Measurements, sensors, symbols, linearisation, state-space models, dynamics, stability, valves and controller design. | Sketch a loop and label the process, disturbance and manipulated variable. |
Plant Design and Economics | Equipment sizing, cost estimation and indices, discounted cash flow, process optimisation and batch scheduling. | Compare annualised cost on a common time and capacity basis. |
Chemical Technology | Inputs, operations and processes for major chemical, fertilizer, natural product, refining, petrochemical and polymer routes. | Draw a small flowsheet for each route and explain why each separation is there. |
Treat the rows as a coverage checklist. To mark a topic complete, explain the assumptions in one representative problem and solve a new problem with different data. A chapter title alone tells you little about what you can do under time pressure.
General Aptitude and mathematics
General Aptitude covers verbal, quantitative, analytical and spatial work. Keep a separate checklist for reading, data interpretation, logical reasoning and mental manipulation of shapes. The official General Aptitude syllabus lists this common section.
For Engineering Mathematics, connect each technique to a technical question. Draw the model before applying a numerical method and check units when moving back to the engineering result. Solve a few isolated mathematics questions each week so the 13 marks remain visible in your plan.
Review the GATE CH exam pattern before you allocate time or score a practice paper.
Build the study order
Phase | Practice | Move on when |
|---|---|---|
Process basis | Work material balances with recycle and purge, then move to an enthalpy balance on a similar diagram. | Draw a fresh flowsheet from a word problem and resolve every unknown without a worked solution. |
Transport and equilibrium | Study momentum, heat and mass transfer together, tracking the driving force and coefficient units for each. | Choose the right friction, heat or mass transfer relation from the given geometry and data. |
Reactions and control | Pair kinetics with reactor sizing and cover transient models before tuning or stability tests. | Explain the assumptions behind an ideal reactor and trace how a change in inlet conditions affects a loop. |
Plant topics | Rotate a technology flowsheet with an economics or equipment-sizing problem each week. | Reproduce a route from feedstock to product and compare alternatives with a consistent cost basis. |
Redo a process balance and a phase-equilibrium question from a released CH paper. Use a blank sheet to record how you chose the basis, found the unknowns and decided where equilibrium applied. If the balance works only when you copy the diagram from a solution, start the next week with flowsheets.
Keep one new and one mixed problem per topic. Solve the new one after reading. Attempt the mixed one two or three study sessions later, with the topic name hidden, to test whether you can recognise the method without a prompt.
Use worked solutions and released papers
For an original paper and its final key, use the IIT Guwahati 2026 master papers and answer keys and select CH.
Suppose a recycle flowsheet gives 100 mol/h of fresh feed and a recycle stream of 20 mol/h at the mixer. The mixed flow is 120 mol/h before any reaction. If a calculation gives 100 mol/h there, the error belongs in stream accounting, regardless of whether later algebra is correct. In a test review, redraw the mixer and do a one-line total balance before retrying the rest of the question.
After checking a solution, close it and write a smaller version of the same problem with one assumption changed. Explain why the previous method still works or what you need to replace. If you browse Testkart for practice, look for explanations that show this model choice before the calculation.
Use the GATE CH study notes guide to turn missed questions into pages you can recall during revision.
How to study transport without mixing coefficients
Take one pipe, one heat exchanger and one absorber example. Identify the relevant driving force, decide where its value changes and list the units of the coefficient you will use. For a nonideal mixture, check whether the equilibrium relation or the transport model determines the answer.
Keep phase behaviour and transfer rate in separate columns. A question may tell you the equilibrium condition but ask how quickly the equipment approaches it. Practise explaining why doubling flow can change both a residence time and the amount of transfer.
Move from topic coverage to exam practice
Give each timed set a purpose. When learning a method, time the setup separately from arithmetic. When several chapters are stable, mix them and score the set by answer type. Leave at least one recent paper untouched until you need a full simulation.
Use the GATE CH mock test guide to check format, score an attempt and plan the next one.
For current schedule and paper details, start with the GATE CH 2027 overview.
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