CBSE Class 12 Chemistry : Important Topics, Tips & Tricks for Exam
CBSE class 12 students preparing for their term II exams would do well to concentrate on the key chapters from the Chemistry syllabus. To succeed in CBSE Class 12 Chemistry, you must take a strategic approach that focuses on deeply understanding the concepts. To excel in the subject and achieve the highest possible score, students should follow a well-thought-out study plan
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Class 12 Chemistry has 16 important chapters covering a variety of topics. These chapters are critical for preparation and success in board exams. This is where the Important Questions for Class 12 Chemistry Board Exam developed by experts based on the most recent syllabus can be extremely useful. Students can use the solutions to practice answering these questions and learn how to do so perfectly, allowing them to score higher.
Similar Articles: CBSE Class 12 Chemistry Practical Exam
Chemistry students studying under the Central Board of Secondary Education's (CBSE) syllabus can use this page to help them prepare for their exams. The important chemistry questions on this page have been categorized (concept-wise) into the relevant chapters for the benefit of the students.
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CBSE Class 12 Chemistry Important Topics
Chemical Kinetics
This chapter, which is divided into prolonged, modern, and swift reactions, is an important chapter for students to cover in the CBSE Class 12 Term 2 Chemistry Syllabus.
Types of Questions Asked:
- Chemical reaction rates and integral rate equations.
- Integrated rate equations are frequently used in a variety of question types, including very short answer (VSA), short answer-II (SA-II), and long answer (LA) questions.
- Short answer-I (SA-I) questions are frequently asked about factors that influence the rate of a reaction.
The following are the essential topics to cover in chemical kinetics.
Factors affecting rate of reaction | Rate law and specific rate constant |
Integrated rate equations and half-life | Order and molecularity of a reaction |
Rate of a reaction | |
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Electrochemistry
Types of Questions Asked:
- Electrochemistry is the most highly rated chapter in the 2023-2024 session.
- Based on a ten-year analysis, the most important topics in the chapter are the 'Nernst Equation' and 'Conductance of Electrolytic Solutions.'
- There were very short answer (VSA) and short answer I (SA-I) questions about the Nernst equation, conductance of electrolytic solutions and electrolytic cells, and electrolysis.
- The Nernst equation is included in the category of questions, along with short answer-II (SA-II) and long answer (LA).
- Students should cover the following electrochemistry topics:
Conductance in electrolytic solutions | Variations of conductivity with concentration |
Redox reactions | Specific and molar conductivity |
Kohlrausch’s Law
Students must cover the following topics in Kohlrausch's Law.
Lead accumulator | Standard electrode potential |
Electrolysis and the law of electrolysis | Dry cell-electrolytic cells and galvanic cells |
Nernst equation | |
Relation between Gibbs Energy Change and emf of a Cell
Students must cover the following topics:
Corrosion | Fuel cells |
Surface Chemistry
Students must cover the following topics in Surface Chemistry:
Factors affecting the adsorption of gases on solids | Adsorption – physisorption, and chemisorption |
Homogeneous and heterogeneous activity and selectivity | Catalysis |
Colloids and suspension | Enzyme catalysis colloidal state distinction |
Lyophilic, Lyophobic Multi-Molecular, and Macromolecular Colloids
Students must cover the following topics:
Tyndall effect | Brownian movement |
Electrophoresis | Properties of colloids |
Coordination Compounds
Types of Questions Asked:
- The maximum marks donating topic of the chapter is ambident (equally shared between two) among bonding and isomerism in coordination compounds.
- Isomerism in coordination compounds was asked for very short answer (VSA) types, whereas bonding in coordination compounds contributes to questions such as short answer-I (SA-I) and short answer-II (SA-II).
- Examiners also gravitate towards the nomenclature of the coordination compound.
- Students must cover the following topics in Coordination Compounds:
Coordination number, colour, magnetic properties, and shapes | IUPAC nomenclature of mononuclear coordination compounds |
Ligands | Werner’s theory |
CFT | VBT |
Bonding | Structure and stereoisomerism |
d and f Block Elements
Types of Questions Asked:
The d- and f- Block Elements:
- The periodic table's most important section is the d- and f-block elements.
- The general properties of the transition element are the ultimate, while some important compounds of transition elements are the penultimate area of interest for question types such as multiple choice question (MCQ), very short answer (VSA), short answer-I (SA-I), short answer-II (SA-II), and long answer (LA).
- Students must cover the following topics in Coordination Compounds:
General trends of the first-row transition metals:
Students must cover the following topics:
General trends of the first-row transition metals | ||
Metallic Character | Catalytic Property | Oxidation States |
Colour | Ionisation Enthalpy | Ionic Radii |
Magnetic Properties | Interstitial Compounds | Alloy Formation |
Preparation and Properties of K2Cr2O7 and KMnO4 | Electronic Configuration | Occurrence |
Characteristics of Transition Metals |
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Actinoids:
Students must cover the following topics:
Actinoids | ||
Electronic Configuration | Oxidation States | Comparison with Lanthanoid |
Lanthanoids:
Students must cover the following topics:
Lanthanoids | |
Chemical reactivity | lanthanoid contraction |
Electronic configuration | Oxidation states |
Organic Compounds Containing Nitrogen | |
Aldehydes, Ketones, and Carboxylic Acids
Types of Questions Asked:
- Aldehydes, ketones, and carboxylic acid are high-scoring chapters.
- Since 2014, chemical reaction questions between aldehydes and ketones have been observed to repeat.
- Almost all types of questions, including multiple choice questions (MCQ), very short answers (VSA), short answer-I (SA-I), short answer-II (SA-II), and long answers (LA), are asked about the chemical reactions of aldehydes and ketones.
Carboxylic Acids | Nomenclature Acidic nature |
Physical and chemical properties | Nomenclature |
Methods of preparation | Reactivity of alpha hydrogen in aldehydes |
Mechanism of Nucleophilic | Physical and chemical properties |
Nature of carbonyl group | Methods of preparation |
Haloalkanes and Haloarenes:
Types of Questions Asked:
- Chemical reactions are an important topic in haloalkanes and haloarenes.
- The chemical reactions of haloalkanes and haloarenes generate a variety of questions, including multiple choice questions (MCQ), very short answers (VSA), short answer-I (SA-I), and short answer-II (SA-II).
- Methods of preparation can also be considered a topic for retaining exam marks.
Haloarenes | |
Nature of C–X bond | Substitution reactions (Directive influence of halogen in monosubstituted compounds only) |
Uses and environmental effects of - dichloromethane, trichloro methane, tetrachloromethane, iodoform, freons, DDT. | |
Haloalkanes | |
Nature of C–X bond, physical and chemical properties | Nomenclature |
Optical Rotation | Mechanism of Substitution Reactions |
Alcohols, Phenols and Ethers:
Types of Questions Asked:
The primary focus of this chapter is on the hydroxy derivatives of alkanes (alcohol) and aromatic rings (phenol).
Alcohol and phenols are a remarkable topic, whether as a multiple-choice question (MCQ), very short answer (VSA), short answer-I (SA-I), or short answer-II (SA-II).
Phenols:
Students must cover the following topics:
Phenols | |
Nomenclature | Methods of preparation |
Physical and Chemical Properties | Acidic Nature of Phenol |
Electrophilic Substitution Reactions | Uses of Phenols |
Ethers:
Students must cover the following topics:
Ethers | |
Nomenclature | methods of preparation, |
physical and chemical properties | Uses of Ethers |
Alcohol:
Students must cover the following topics:
Alcohol | |
Nomenclature | Methods of Preparation, |
Physical and chemical properties | Uses of Alcohols with special reference to methanol and ethanol. |
Identification of Primary, Secondary and Tertiary Alcohols | Mechanism of Dehydration |
Amines
Types of Questions Asked:
- The chemical reactions of amines (alkyl and aryl derivatives of ammonia) are the primary focus of study.
- The engrossed area of questions, including multiple-choice questions (MCQ), very short answers (VSA), short answer-I (SA-I), and even short answer-II (SA-II), are derived from amine chemical reactions.
Diazonium salts | |
Preparation | Chemical reactions and Importance in synthetic organic chemistry. |
Amines | |
Nomenclature | Identification of Primary, Secondary and Tertiary amines |
Classification, | structure |
Methods of preparation | Physical and Chemical properties, |
Uses of Amine |
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Solutions:
Types of Questions Asked:
Multiple choice questions (MCQ), very short answers (VSA), short answer-I (SA-I), and short answer-II (SA-II) types are frequently used to ask about colligative properties and molar mass determination.
Ideal and Non-Ideal solutions | Colligative Properties |
Determination of Molar Mass | Abnormal Masses |
CBSE Class 12 Chemistry Syllabus for Practical
The following is a breakdown of the marks for practical, project work, class records, and viva. The total number of marks for all parts is 15. The marks for both terms are provided in the table below.
Evaluation Scheme for Examination | Marks |
Volumetric Analysis | 08 |
Salt Analysis | 08 |
Content-Based Experiment | 06 |
Project Work | 04 |
Class record and viva | 04 |
Total Marks | 30 |
Preparation Tips for CBSE Class 12 Chemistry Syllabus
- Organic chemistry is a significant component of the exam. To improve your mastery, focus on mechanisms and practice conversion-based questions regularly.
- Solve sample papers to get to know the exam pattern. Identify common question patterns and areas for emphasis.
- Ensure you have a firm grasp of the foundational ideas before moving on to more complex subjects.
- Plan regular revision sessions to reinforce learned concepts.
- Chemistry requires numerical problem-solving. Set aside time to practice calculations and numerical exercises.
- Familiarize yourself with the use of formulas in various scenarios.
- Memorize key details about the periodic table, such as trends in atomic properties.
- Understand the periodicity of elements and its implications in reactions.
- Condense complex concepts into brief mind maps for each chapter.
- If you have any questions, do not hesitate to ask your teachers or classmates for clarification.