Chemistry is considered to be the rank deciding subject in JEE Main & Advanced exams. Those who score well in chemistry generally outperform those who did poorly in the subject.
Let us know more about the ins and outs of the subject.
The chemistry at the +2 level is divided into three broad correlated modules:
- Physical chemistry: considered to be the most interesting module by most students, physical chemistry is quite similar to physics. You will be taught a large number of new concepts in physical chemistry which include Chemical thermodynamics, chemical equilibrium, chemical kinetics, electrochemistry, etc. The most important and central concept in physical chemistry is the mole concept, which lies at the heart of the subject. Students should read this chapter thoroughly to gain a firm command over the entire chemistry subject. It is also important to understand the application of mole concept to various types of reactions, especially redox reactions. Several questions of physical chemistry in competitive examinations like JEE Main, JEE Advanced can be solved easily if one is well versed with mole concept.
- Organic chemistry: Another important and interesting part of chemistry. The key to understand the entire organic chemistry is to understand the general organic chemistry section – electrophiles, nucleophiles, types of reaction, acidity, basicity, etc. The remaining organic chemistry is just the application part. If one understands that a nucleophile attacks an electrophile, then half of the work is done. The remaining half lies in identifying the nucleophile and the electrophile and then writing the mechanism.A large part of organic chemistry consists of standard “named” reactions and students are expected to know these reactions along with the mechanisms. It is always good to know the mechanism of a specific reaction so that you can solve a similar new problem. Solomon and Fryhle’s Organic Chemistry book by Wiley publishers is one of the best book for learning organic chemistry besides other available books.Another important aspect of organic chemistry is the portion of organic synthesis, which involves writing a sequence of steps to synthesize a given compound from a given set of reagents with as little effort as possible. Quite a few problems of organic chemistry in the competitive examinations are based on organic synthesis where the students are expected to identify the missing reagents/chemicals in a specific step of the synthesis and so it becomes important to be aware of the common reactions, especially the ones mentioned in the CBSE syllabus.That said, remember, organic chemistry is similar to mathematics. It’s the mathematics of carbon. Do not be afraid of it. The more you practice, the more you learn and the better you know it.
- Inorganic Chemistry: Probably the most hated branch of chemistry because a large part of it involves “learning” reactions and properties of various compounds. Well, it would be bad to bias your thoughts right here. For some, inorganic chemistry might be fun. It’s a good idea to refer to the syllabus of competitive examinations for inorganic chemistry and to remain confined to the syllabus. There are a large number of compounds and you are expected to know about them (methods of preparation, chemical reactions, uses, etc) and so, it’s a good idea to not divert much from syllabus. Most questions of inorganic chemistry are asked from p-block elements and it becomes important to understand this chapter rather than just cramming it. A good knowledge of periodic table and the trends in the properties of atoms (ionization potential, atomic radius, electronegativity, electron affinity, electrode potential) will help you to understand the reactions and so, you won’t be required to mug them up.
Take chemistry as seriously as mathematics and physics. Do not ignore this subject because you feel chemistry is purely “cramming”. Read more books, gain more knowledge and experience to be better at this subject and you will end up with a great performance in competitive examinations.
About the Author
|Aman Goel is B.Tech, computer science and engineering undergraduate student at Indian Institute of Technology, Bombay. Born in a business oriented family of Kanpur he secured an All India Rank 33 in JEE advanced 2013 and also scored 323/360 in JEE main 2013. He has also cleared Indian National Physics and Chemistry Olympiads, and KVPY. In his free time, he likes to write articles related to JEE preparation. He loves speedcubing (the art of speed solving a Rubik's cube) and also loves to play computer/mobile games.|