GATE 2021 | Admit Card | Login |

Answer Key | Result | Response Sheet |

Score Calculators, Rank Predictor | PSU Recruitment | Rank vs Marks vs Score |

**GATE 2021 Syllabus for Chemistry: **The syllabus for Chemistry for GATE 2021 is available to the candidates on this page. The chemistry paper syllabus includes three broad sections which further include topics and subtopics. The GATE 2021 syllabus is different for all the 27 subjects in GATE 2021. Out of a total 65 questions, 55 questions will be based on Chemistry. The remaining 10 questions will be based on the General Aptitude section. Candidates can check the syllabus for the Chemistry subject on this page.

## GATE 2021 Syllabus for Chemistry

The Chemistry syllabus for GATE 2021 will include 3 sections- Physical Chemistry, Inorganic Chemistry and Organic Chemistry. These sections have topics like Structure, Stereochemistry, Main Groups Element, etc.

**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.

**Differential equations:**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.

**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 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

There are two sections in the General Aptitude section – Verbal Ability and Numerical Ability. There will be a total of 10 questions in this section. Out of these 10 questions, 5 questions will be of 1 mark each and the other 5 questions will be of 2 marks each. Candidates can check the syllabus for the GA section below. The GA syllabus remains the same in all the 25 GATE 2021 subjects.

**Verbal Ability**

- English grammar
- Sentence completion
- Instructions
- Verbal analogies
- Word groups
- Critical reasoning
- Verbal deduction.

**Numerical Ability**

- Numerical computation
- Numerical estimation
- Numerical reasoning
- Data interpretation.

### GATE 2021 Chemical Engineering Exam Pattern

Candidates must check out the exam pattern and the marking scheme of the exam so that they know what will be the type of questions that will be asked in the exam, how many sections will be there in the exam and other important information about the exam. For the exam pattern and the marking scheme of the GATE 2021 check below.

Section | Distribution of Marks | Total Marks | Types of questions |

GA | 5 questions of 1 mark each 5 questions of 2 marks each | 15 marks | MCQs |

CY- Subject-Based | 25 questions of 1 mark each 30 questions of 2 marks each | 85 marks | MCQs and NATs |

The exam mode of GATE 2021 will be online and it will be a Computer Based Test (CBT). The duration of the same is 3 hours. There will be two types of questions – MCQs and NATs. The two sections in the exam are General Aptitude and Subject-based. The total number of questions is 65 and the total marks are 100 marks. There will be negative marking for only the MCQs in the exam.

**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 Chemistry?

Some students find it hard to decide their preparation strategy. The syllabus is huge and there are only 4-5 months left. To make it easy for you we have compiled a few tips that you must keep in mind when you are preparing for GATE 2021. Consider them as guidelines that must be followed honestly. You can jot them down somewhere for future reference.

**Important Sections**

The General Aptitude and Mathematics sections are important sections. Taken together, they carry around 30 marks. You must not leave these sections at any cost. General aptitude, as the name suggests is general and very easy. It can be a very scoring section if you prepare well enough. Also, focus a little more on mathematics. Practice a lot for this section. Don’t make the mistake of taking these two sections lightly. These are the easiest 30 marks that you can bag in GATE 2021.

**Standard preparation**

Standard preparation means the preparation done through standard books. The language in these books is quite easy to understand and learn. Such books cover the concepts very well with the right amount of information. You must stick to standard books only and avoid going fancy on books. Less the material better the preparation, given that the material is really good.

**Practice a lot**

Candidates must practice as much as they can. Solve a lot of numericals and try numericals of different difficulty levels. A variety of questions will broaden your quantitative aptitude. The GATE 2021 will involve numericals that you can only solve if you practiced extensively. Also, start with the General Aptitude and Mathematics section. One of them is really easy and it will be a lot better if you get done with them. Next, move on to practicing the Chemistry section. It is the section with the most weightage. Solve mock tests, sample papers and previous year question papers. These three must be a part of your preparation.

**Practice Daily **

Practicing a few times a week will not be enough if you are aiming for impressing marks. For that, you will have to practice every day without slacking. Divide topics and make a practicing schedule. Devote a minimum of 3 hours to practicing alone. Daily practice is important so that you don’t fall out of the loop and continue practicing with the same motivation.

**Revise Daily**

Just like daily practice, daily revision is important too. Whatever you learn or understand throughout the day, revise it at the end of the day. This way you won’t forget it and it will help you memorize better. You can also revise the topic you last did before starting a new topic. It will be like a recap of what you did last time. Maintain notes of all the topics or chapters and revise from them.

### GATE Chemistry Books for Preparation

Choose only the best study material for your GATE 2021 preparation. The books from known authors and popular publications can be picked up for preparation. Try to stick to 1-2 books as a lot of material makes you confused.

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

Chapterwise Solved Papers Chemistry GATE 2021 | Sanjay Saxena & Preeti Gupta | LINK |

GATE 2021: Chemistry Year-wise Previous Solved Papers 2000-2019 | GKP | LINK |

### About Chemistry Subject?

Chemistry is a scientific discipline that involves elements and compounds composed of atoms, molecules and ions. Chemistry as a subject occupies an intermediate position between Physics and Biology. The subject provides a foundation for understanding both basic and applied scientific disciplines at a fundamental level.

### GATE 2021 Preparation FAQs

**Q1. How long will it take for the GATE syllabus to be completed?****Ans.** You can complete the GATE 2021 syllabus in 4-5 months. However, it varies from person to person and depends on the speed of preparation.

**Q2. Can I prepare for GATE 2021 from 2-3 books?****Ans. **Yes, you can study from 2 or 3 books but make sure that the books are good study materials. You can prepare from fewer books but you should prepare well.

**Q3. What topics can I leave in the Chemistry subject?****Ans. **It is suggested that you should complete the syllabus but if you don’t have enough time, then prepare for the important topics and the topics with high weightage first.