JEE Advanced preparation tips for Chemistry
By Aman Goel
In JEE Advanced, Chemistry is the subject that can help you in securing a good rank or can ruin your whole exam even after good scores in Physics and Mathematics. Chemistry guarantees you good marks in JEE Advanced/JEE Mains, on the off chance that you have prepared well. Many students take this subject for granted and don’t put much effort in comparison to the efforts put in Physics and Mathematics.
Most of the time, questions of JEE Chemistry are not twisted, rather they are direct. The key to solving problems of chemistry lies in understanding basic concepts clearly. The NCERT Chemistry Book contains all the relevant theory along with basic and easy questions. It helps in laying the conceptual groundwork and increase your confidence. The partwise analysis of Chemistry is as follows:
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Physical Chemistry
- Stoichiometry: This is the most important chapter of Physical Chemistry. If you understand its concepts then the rest of the preparation in this section will be easier. It will help you gain firm command over the entire JEE chemistry. Practice some questions on Concentration terms such as Mole fraction, Normality, Morality, Molality, %(w/w), %(w/v), etc.
- Chemical Bonding: It is a basic chapter of which, the concepts are used in entire organic chemistry. Direct questions are always asked from Dipole moment, Hybridisation and VSEPR theory. You should understand how valence electrons get transferred during different types of bonds.
- Chemical Equilibrium: It is one of the easiest chapters. Make sure you do read the theory part along with numerical as sometimes questions are theory-based like from Le Chatelier’s principle (effect of temperature, concentration, and pressure).
- Atomic structure: Questions are frequently asked from Quantum numbers, De Broglie Hypothesis, Heisenberg’s Uncertainty Principle and Spectrum of a Hydrogen atom. Also, this chapter is very logical and you will enjoy studying this. This should be easy. Make sure you practice the standard questions.
- Chemical kinetics: Pay special attention to 1st order reactions. This is also an easy chapter. Questions asked in JEE are also not difficult.
- Thermodynamics: This is a bit tricky chapter. You can catch up on the first part if you have studied it in physics. Most of the concepts take some time to be completely understood. So, be patient and solve a lot of questions. Be careful of the signs. If your concepts are clear then you will be comfortable in numerical like entropy calculations.
- Electrochemistry: Nernst equation, its relation and its various applications like Electrochemical series, E.M.F of Galvanic cells, Faraday’s laws of electrolysis, Electrolytic conductance, Kohlrausch’s law are some of its important units. These units are easy if you understand the Nernst equation well.
- Surface Chemistry: You have to memorize most of this from NCERT.
For numerical questions (especially in physical chemistry), you must revise shortcut formulas which would enable you to derive the answers quickly, and hence save time. If you face problem in remembering the particular formula, have a look at its logic or derivation so that you can derive it on your own when needed. You should memorize all the formulas of the Mole concept, Chemical kinetics, Equilibrium, and Electrochemistry. Solving lots of problems on these topics makes your numerical approach strong.
Clearing the JEE Main exam in first attempt is not a difficult task. Several students clear JEE Main while in class 12. One thing that makes it easy to clear JEE Main with class 12 is that students are in regular touch of most JEE syllabus. To score good marks in JEE Main in the first attempt, it is advised that you study class 11 and 12 topics thoroughly, clear all the concepts and solve mock test papers. Also, NCERT books which you study in class 11 and 12 are the best books for JEE Main preparation. Students must study NCERT properly and solve all the questions in the book and do not memorize the concepts as some students do rather understand the concepts.
INORGANIC CHEMISTRY
NCERT, hands down! This is the book of which you have to study every line very carefully. Many students ignore this part as they think that I’ll study this in the last 2 months and I’ll score well. Don’t do this. The syllabus is huge and you need to study this from the beginning and revise regularly.
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- Coordination compounds: Stereoisomerism of coordination compounds, Werner Theory, Geometry and shapes of Tetrahedral and Octahedral complexes, Crystal field theory and its applications.
- Metallurgy and ores: Mainly standard questions are asked from NCERT. Carbon reduction method (tin and iron), Self-reduction method ( lead and copper), Electrolytic reduction method (aluminum and magnesium), Cyanide process ( gold and silver).
- P block: This is one of the most important chapters. 3-4 questions are guaranteed from this. Read from NCERT only.
In Inorganic chemistry, Exceptions are very important because many questions in JEE Main and JEE Advanced are based on exceptions itself.
ORGANIC CHEMISTRY
Organic chemistry is the most beautiful part of JEE Chemistry. If you understand what's happening underneath the hood of the reactions(i.e. the mechanism) then you will score very well in this section. Always remember that a nucleophile attacks an electrophile. Don’t try to learn reactions (especially for organic chemistry). It is not a decent practice. Try to understand the complete mechanism behind it.
A large portion of organic chemistry consists of named reactions and you are expected to know these reactions along with the complete mechanisms. Standard reactions and named reactions are the most important. Direct questions are always asked on this topic. There is a very high probability of occurrence of at least one question from each Aldol condensation and Cannizzaro’s reaction. Try to understand the mechanism of organic chemistry rather than just mugging it up.
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Overall, JEE Chemistry can boost your rank and will also save your time during exams as you can complete in less than 1 hour if you have studied. This is a very high scoring subject so study it well and do memorize the stuff wherever needed.
About the Author:
Aman Goel is co-founder at a Tech Start-up. He holds a BTech in Computer Science Engineering from IIT Bombay with a JEE Advanced AIR 33 (Year 2013).
During his free time, he enjoys writing articles/blogs. He is an Entrepreneur, Coder, Speed-cuber, gamer, and fan of Air crash investigation!
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The time period required to complete the JEE Main preparation depends mainly on the students. Every student has their own pace of study. Ideally, 6-month time is good enough to complete the JEE Main preparation. Students who have started preparing from class 11 or 12 can easily prepare for JEE Main in 6 months considering the topics of JEE syllabus have already been studied in classes 11 and 12.
JEE Main preparation is most effective with classes 11 and 12 as almost 90-95 percent of topics are similar in both exams. This way students can easily complete the entire JEE Main syllabus as well as the syllabus of classes 11 and 12. After the board exams, students get 1-2 months' time where they can focus entirely on JEE Main. Students who have started late for the JEE Main exam can make a 6-month plan where in the first three months they have to focus on revising the syllabus studied in classes 11 and 12. In the next two months focus on solving questions of JEE Main and analyzing the mistakes being made, if any. The last month should be focused on solving mock tests and JEE Main previous year question papers.