Chemistry is one of the most important subjects in class 12th. However, it is equally challenging at the same time, which is why many students fail to score good marks in this subject. So, if you feel that you are not good in Chemistry, then it is important for you to study hard to score good marks in class 12th Chemistry exam.
The Chemistry syllabus of CBSE class 12 is vast which is divided into three categories, i.e., namely Physical, Organic and Inorganic Chemistry. Further, the syllabus comprises of 16 chapters which are equally important for exam preparation. So, to score good marks in Chemistry exam, you must prepare the syllabus by focussing on the most important topics in every chapter. By following this strategy for exam preparation, you will be able to cover the whole syllabus easily and perform better in the exam.
Taking into consideration the importance of the selective study, here you can find chapter-wise most important topics for Chemistry. Students preparing for class 12 Chemistry exam are required to go through these topics thoroughly to score well in the Chemistry exam of class 12.
Unit 1 - Solid State
● Classification of solids based on different binding forces (Molecular, ionic, covalent and metallic solids).
● Calculation of the density of unit cell
● Band theory of Metals, Conductors, Semiconductors and Insulators and n & p-type semiconductors
Unit 2 - Solutions
In this chapter, students can expect questions of one marks from topics such as types of solutions. Some of the other important topics of this chapter are:
● Henry’s law
● Depression of freezing point
● Van't Hoff factor
● Osmotic pressure
Unit 3 - Electrochemistry
From this chapter, students can expect one marks questions from topics like Conductance in electrolytic solutions and Kohlrausch's Law. Some other important topics in this chapter are as follows:
● The Faradays' laws
● Redox reactions
● Lead accumulator (for theory questions)
● Standard electrode potential (Very important)
● Corrosion (for Chemical equations)
Unit 4 - Chemical Kinetics
From this chapter, conceptual questions can be expected in CBSE class 12 board exam. Some of the important chapters in this chapter are as follows:
● Rate of a Reaction
● Concept of collision theory
● Activation energy (effect of temperature, very important)
● Arrhenius equation (Very important)
Unit 5 - Surface Chemistry
Following are some of the important topics in this chapter:
● Adsorption - physisorption and chemisorption (Very important)
● Tyndall effect (Very important)
● Brownian movement (Very important)
● Emulsion - types of emulsions
Unit 6 - Isolation of Elements
● The Principles and methods of extraction - concentration, oxidation, reduction
● Occurrence and principles of extraction of aluminium, copper, zinc & iron
Unit 7 - p Block Elements
In Group 15 elements, conceptual questions are asked every year from topics like Nitrogen, preparation properties & uses and Preparation and properties of Ammonia and Nitric acid. Additionally, some of the important topics from these chapters are as follows :
● Oxides of Nitrogen (Structure only) - Important
● Phosphorus – (Very important)
● Sulphuric acid: industrial process of manufacture, properties and uses (Very important) - Group 16 Elements
● Compounds of halogens and oxoacids of halogens (Group 17 Elements)
● Allotropic forms
Unit 8 - d-Block And f-Block Elements
In this chapter, it is important for class 12th students to focus on the topics related to Lanthanoids and Actinoids. Given below are some of the important topics of this chapter:
● Ionization enthalpy and Oxidation states (very important)
● Oxidation states and Interstitial compounds
● Catalytic property and magnetic properties
● Alloy formation
Unit 9 - Coordination Compounds
In Coordination Compounds, students are advised to focus thoroughly on topics like coordination number, colour, magnetic properties and shapes. Some of the other more important topics are as follows:
● Structure and stereo isomerism (very important)
● Bonding
● Werner's theory
● VBT (very important)
● CFT (very important)
Unit 10 - Haloalkanes and Haloarenes
An important chapter for board exam preparation, some of the important topics in this chapter are as follows :
Haloalkanes:
● Nomenclature
● Nature of C-X bond
● Physical and chemical properties
● Mechanism of substitution reactions
Haloarenes:
Uses and environmental effects of Dichloromethane, Tetrachloromethane
Iodoform and Freons.
Unit 11 - Alcohols, Phenols and Ethers
It is important for students to understand and learn the important topics of this chapter to score good marks in chemistry. Following are some of the important topics in Alcohols, Phenols and Ethers :
● Nomenclature (Alcohols, Phenols and Ethers)
● Physical and chemical properties (Alcohols, Phenols and Ethers)
● Methods of Preparation (Alcohols, Phenols and Ethers)
Unit 12 - Aldehydes, Ketones and Carboxylic Acids
The chapter is not very important for Class 12 Chemistry Board exam point of view. However, you should focus on carboxylic acids and mechanism of Nucleophilic addition as one or two questions can be expected from this chapter.
Unit 13 - Organic Compounds containing Nitrogen
Some of the important topics in this chapter are as follows :
● Amines and Method of Preparation
● Identification of primary, secondary and tertiary amines (very important)
● Diazonium salts and its Preparation
● Chemical reactions and importance in synthetic organic chemistry (very important)
Unit 14 - Biomolecules
The chapter comprises of explanation on important topics like Carbohydrates and Protein. It is an important chapter for board exam point of view and the following topics are very important :
● Classification (aldoses and ketoses)
● Importance of carbohydrates
● Structure of proteins - primary, secondary, tertiary structure
● Vitamins - Classification and functions
● Nucleic Acids: DNA and RNA
● Copolymerization (very important)
Unit 15 - Polymers
Focus more on important topics like methods of polymerization, copolymerization and bakelite. Additionally, give importance to topics such as :
● Copolymerization (very important)
● Nylon polyesters
● Bakelite (very important)
● Biodegradable and non-biodegradable polymers
Unit 16 - Chemistry in Everyday Life
In this chapter, focus more on important topics such as antacids and antibiotics. Following are some other important topics in this chapter for the board exam :
● Chemicals in medicines: Antifertility drugs, Antibiotics and Antacids (very important)
● Artificial sweetening agents (very important)
● Cleansing agents: Soaps & detergents and Cleansing action (very important)
Final Words
Apart from focussing on important topics for exam preparation, it is also important that you practice with the NCERT class 12 Chemistry solutions and solve previous year question papers as much as possible.
Additionally, you should follow a proper revision strategy to revise all these important topics and prepare effectively for the exam.
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