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**GATE 2021 Syllabus for Chemical Engineering: **The syllabus for Chemical Engineering is available on this page. Under the Chemical Engineering syllabus, there are 9 broad sections which further includes various topics and subtopics. Out of a total of 65 questions, 55 questions will be Chemical Engineering-based and Mathematics based questions. The rest 10 questions will be General Aptitude based questions. The general aptitude syllabus is common in all the subjects however the subjects based GATE 2021 syllabus varies from subject to subject. Candidates can check the entire syllabus on the website of **GATE 2021. **

## GATE 2021 Syllabus for Chemical Engineering

The syllabus for GATE 2021 includes sections like Engineering Mathematics, Process Calculations and Thermodynamics, Fluid Mechanics and Mechanical Operations, Heat Transfer, Mass Transfer, Chemical Reaction Engineering, Instrumentations and Process Control, Plant Design & Economics and Chemical Technology.

**Section 1: Engineering Mathematics**

**Linear Algebra:** Matrix algebra, Systems of linear equations, Eigen values and eigenvectors.

**Calculus:**Functions of single variable, Limit, continuity and differentiability, Taylor series, Mean value theorems, Evaluation of definite and improper integrals, Partial derivatives, Total derivative, Maxima and minima, Gradient, Divergence and Curl, Vector identities, Directional derivatives, Line, Surface and Volume integrals, Stokes, Gauss and Green’s theorems.

**First order equations (linear and nonlinear), Higher order linear differential equations with constant coefficients, Cauchy’s and Euler’s equations, Initial and boundary value problems, Laplace transforms, Solutions of one-dimensional heat and wave equations and Laplace equation.**

Differential equations:

Differential equations:

**Complex variables:**Complex number, polar form of complex number, triangle inequality. Probability and Statistics: Definitions of probability and sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Poisson, Normal and Binomial distributions, Linear regression analysis.

**Numerical Methods:**Numerical solutions of linear and non-linear algebraic equations. Integration by trapezoidal and Simpson’s rule. Single and multi-step methods for numerical the solution of differential equations.

**Section 2: Process Calculations and Thermodynamics**

Steady and unsteady state mass and energy balances including multiphase, multi-component, reacting and non-reacting systems. Use of tie components; recycle, bypass and purge calculations; Gibb’s phase rule and degree of freedom analysis. First and Second laws of thermodynamics. Applications of first law to close and open systems. Second law and Entropy. Thermodynamic properties of pure substances: Equation of State and residual properties, properties of mixtures: partial molar properties, fugacity, excess properties and activity coefficients; phase equilibria: predicting VLE of systems; chemical reaction equilibrium.

**Section 3: Fluid Mechanics and Mechanical Operations** – Fluid statics, surface tension, Newtonian and non-Newtonian fluids, transport properties, shell balances including differential form of Bernoulli equation and energy balance, equation of continuity, equation of motion, equation of mechanical energy, Macroscopic friction factors, dimensional analysis and similitude, flow through pipeline systems, velocity profiles, flow meters, pumps and compressors, elementary boundary layer theory, flow past immersed bodies including packed and fluidized beds, Turbulent flow: fluctuating velocity, universal velocity

profile and pressure drop. Particle size and shape, particle size distribution, size reduction and classification of solid particles; free and hindered settling; centrifuge and cyclones; thickening and classification, filtration, agitation and mixing; conveying of solids.

**Section 4: Heat Transfer – ** Equation of energy, steady and unsteady heat conduction, convection and radiation, thermal boundary layer and heat transfer coefficients, boiling, condensation and evaporation; types of heat exchangers and evaporators and their process calculations; design of double pipe, shell and tube heat exchangers, and single and multiple effect evaporators.

**Section 5: Mass Transfer** – Fick’s laws, molecular diffusion in fluids, mass transfer coefficients, film, penetration and surface renewal theories; momentum, heat and mass transfer analogies; stage-wise and continuous contacting and stage efficiencies; HTU & NTU concepts; design and operation of equipment for

distillation, absorption, leaching, liquid-liquid extraction, drying, humidification, dehumidification and adsorption, membrane separations(micro-filtration, ultra-filtration, nano-filtration and reverse osmosis).

**Section 6: Chemical Reaction Engineering**– Theories of reaction rates; kinetics of homogeneous reactions, interpretation of kinetic data, single and multiple reactions in ideal reactors, kinetics of enzyme reactions (Michaelis-Menten and Monod models), non-ideal reactors; residence time distribution, single parameter model; non-isothermal reactors; kinetics of heterogeneous catalytic reactions; diffusion effects in catalysis; rate and performance equations for catalyst deactivation.

**Section 7: Instrumentation and Process Control** – Measurement of process variables; sensors and transducers; P&ID equipment symbols; process modeling and linearization, transfer functions and dynamic responses of various systems, systems with inverse response, process reaction curve, controller modes (P, PI, and PID); control valves; transducer dynamics; analysis of closed loop systems including stability, frequency response, controller tuning, cascade and feed forward control.

**Section 8: Plant Design and Economics**– Principles of process economics and cost estimation including depreciation and total annualized cost, cost indices, rate of return, payback period, discounted cash flow, optimization in process design and sizing of chemical engineering equipments such as heat exchangers and multistage contactors.

**Section 9: Chemical Technology – ** Inorganic chemical industries (sulfuric acid, phosphoric acid, chlor-alkali industry), fertilizers (Ammonia, Urea, SSP and TSP); natural products industries (Pulp and Paper, Sugar, Oil, and Fats); petroleum refining and petrochemicals; polymerization industries (polyethylene,

polypropylene, PVC and polyester synthetic fibers).

### GATE 2021 General Aptitude Syllabus

The syllabus for General Aptitude remains the same in all the 25 subjects of GATE 2021. A total of 10 questions come from this section. 5 of them will carry 1 mark each and the other 55 will carry 2 marks each. The GA section constitutes of two parts – Verbal Ability and Numerical Ability. For General Aptitude syllabus candidates can check below.

**Verbal Ability:** English grammar, sentence completion, instructions, verbal analogies, word groups, critical reasoning and verbal deduction. **Numerical Ability:** Numerical computation, numerical estimation, numerical reasoning and data interpretation.

### GATE 2021 CH Mock Tests

Your GATE 2021 preparation must include practicing a lot of Mock Tests. Mocks help you to detect your weak areas and improve them while there is still time.

### GATE 2021 Chemical Engineering Exam Pattern

Before starting your Chemical Engineering preparation, you must go through the exam pattern and marking scheme of GATE 2021. The exam pattern will give you a fair idea about what the exam will be like. You should be aware of the type of questions asked, total marks of the exam, the duration of the exam, etc. Candidates can check the exam pattern and the marking scheme below.

Sections | Total Marks |

GA | 15% of the total marks |

Mathematics | 15% of the total marks |

CH – Subject-Based | 70% of the total marks |

- The exam is conducted online and is a Computer Based Test.
- Duration of the GATE 2021 exam is 3 hours.
- 2 types of questions will be asked – MCQs and NATs.
- 3 types of sections will be there in the exam – General Aptitude, Mathematics and Subject-based.
- A total of 65 questions will be asked.
- Total marks in the exam are 100 marks.
- There will be negative marking MCQs only.

**Marking scheme**

Type of question | Negative marking for wrong answer | Marking for correct answer |

MCQs | ⅓ for 1 mark questions⅔ for 2 marks questions | 1 or 2 marks |

NATs | No negative marking | 1 or 2 marks |

### How to Prepare for GATE Chemical Engineering?

When you are preparing for the GATE Chemical Engineering 2021, keep a few things in mind. First, you must go through the exam pattern and the marking scheme of the exam. That we have already discussed below. Next, you must collect all the mock tests, previous years’ question papers and good study material. With a good mix of three, your preparation should be done. Let’s look at them one by one and a few more preparation tips.

**Prepare section-wise **

In order to not lose marks in any of the 3 sections in the exam, you must prepare section-wise. For general aptitude section, focus on the part that you are weak at (Verbal Aptitude or Numerical Aptitude). The mathematics section requires a lot of practice, more if it’s your weakest section. For the chemical Engineering section, you must prepare all the important topics first. Practice as much as you can as this is the subject-based section that carries the most weightage in the exam.

**Mocks are a must**

Mocks are an important part of your GATE preparation. Start your preparation from taking a single mocks tests so that you know what you will be doing for the next few months. The mock test is just to introduce you to the concepts so even if you don’t score well, it’s alright. During your preparation, you must take weekly mocks so that you know if you have made any progress in the week. Lastly take section-wise mocks so that you can prepare each section well. In the end take full syllabus mocks. Don’t take them before completing the syllabus.

**Previous year question papers**

You can also prepare through previous years’ question papers. They will give you a fair idea about the type of questions that were asked in the past years. Observe the trend and the topics that were questioned in the last few years. Focus more on those topics as chances are that some questions will come from those topics.

**Be strategic-minded**

Try to be strategic in everything that you prepare. Whether you prepare for a particular section or solve some mock tests, follow a pattern or at least try to. This will help you to prepare in an organized manner. Think strategically and work strategically. It will take you a long way.

**Do Revise everything**

If you want to keep everything you have learned intact, then you must do revision of each and every topic that you prepare. It is recommended to revise at the end of the day whatever that you have studied in the daylight. This will help you prepare better for the exam. You can make revision a little interesting with self-made notes. Make them short and to the point.

### GATE CH Books for Preparation

Choose your study material wisely. You should focus more on studying right instead of studying more. Pick up guides or books from popular authors and publications.

Title of the book | Name of the Author/ Publication | Link to buy |

1.Chemical Engineering GATE 2021 | Arihant | LINK |

2.Chemical Engineering Solved Papers GATE 2021 | Nikhil Kr. Gupta | LINK |

3.GATE 2021 – Guide – Chemical Engineering | GKP | LINK |

4.GATE 2021 20 Years’ Solved Papers (2000-2019) Chemical Engineering | GKP | LINK |

### What is Chemical Engineering?

Chemical Engineering is one of the many fields of engineering. The branch makes use of the principles of chemistry, mathematics, physics, biology, and economics to efficiently use, produce, design, transport and transform energy & materials. The field involves plant design & operations, including safety and hazard assessments, process design and analysis, chemical reaction engineering, nuclear engineering, biological engineering, construction specification, etc.

### GATE 2021 Preparation FAQs

**Q1. Which month should one start preparing for the GATE 2021?****Ans.** There is no fixed month to start your preparation. You should start it as soon as you can. But start preparing by July because you will need 4-5 months to prepare for GATE 2021.

**Q2. Where can I find mock tests for CH GATE 2021?****Ans**. You can practice from the mock test given on this page. For more mock tests you can look it up online and join some test series as well.

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