CBSE 12th Exam: Most Important Topics In Physics, Chemistry & Bio


CBSE Class 12 Term-2 Exam 2022: Most Important Topics From Physics, Chemistry & Biology

As You Know CBSE Board Exams Term 2 2022 will begin on 26 April 2022 and exams are to be conducted in two faces term 1 and term 2. All Students are advised to go through their Syllabus and revise well for their board exams. 

Also Read: CBSE Class 12 Sample Paper From Official Website

Here all of you can Check the most important topics that need to be prepared before CBSE Class 12 Board exams for Physics, Chemistry and Biology. The parts of PCM discussed below are Physics, Chemistry, Biology. Check the main topics of these three subjects here and prepared accordingly.

CBSE 12th Most Important Topics in Physics, Chemistry and Biology
CBSE 12th Most Important Topics in Physics, Chemistry and Biology
CBSE Class 12 Term 2 2022: Most Important Physics Topics

Also Ready: CBSE Class 12 Physics Best Study Materials

Also Read: CBSE Class 12 Physics Sample Papers

Given Below Are the most important topics of Physics for board exam 2022. All Students must be sure to revise these topics before they go to their final Board exams.

Chapter-8 : Electromagnetic Waves
1. EM waves
2. Displacement Current
2. Nature of EM waves
Chapter-9 : Ray Optics and Optical Instruments
1. Image formation by spherical mirrors
2. Image formation by spherical lenses
3. Power and combination of lenses
4. Total internal reflection
5. Natural phenomenon due to light (Definition and Numericals)
6. Refraction through a Prism (Ray diagram, Numericals and Derivation)
7. Eye
8. Microscope
9. Telescope
Chapter-10 : Wave optics
1. Incoherent and coherent waves addition
2. Reflection and refraction of plane waves using the Huygen principle
3. Interference and Young’s double-slit experiment
4. Diffraction of light
5. Polarisation by scattering
6. Resolving power of optical Instruments
Chapter-11 : Dual Nature of Radiation and Matter
1. Photoelectric effect
2. de Broglie hypothesis
3. Davisson and Germer experiment
4. Einstein photoelectric equation
Chapter-12 : Atoms
1. Atomic spectra
2. Electron Orbits
3. de-Broglie explanation of Bohr’s postulate
4. Bohr Model of a Hydrogen atom
5. Line spectra of a Hydrogen atom
Chapter-13 : Nuclei
1. Nuclear binding energy
2. Radioactivity
3. Radioactive decays
Chapter-14 : Semiconductor Electronics: Materials, Devices and Simple Circuits
1. Intrinsic semiconductors
2. Extrinsic semiconductors
3. p-n Junction diode
4. p-n Junction in reverse bias and forward bias
5. n-p-n and p-n-p transistor
6. Junction diode as a rectifier
7. Zener diode as a voltage regulator
8. Transistor as an amplifier
9. Logic gates
Chapter-15 : Communication Systems
1. Elements of communication system
2. Propagation of em waves
3. Basic terminologies of electronic communication system
4. Amplitude modulation
CBSE Class 12 Physics Important Topics
CBSE Class 12 Term 2 2022: Most Important Chemistry Topics

Also Read: CBSE Class 12 Chemistry Best Study Materials

Given Below Are The important topics of Chemistry to be revised before the final board exams.

Chapter-3 : Electrochemistry
1. Redox reactions (prepare definition with examples, corrosion is an example of a redox reaction)
2. Conductance in electrolytic solutions (One marks questions are expected)
3. Specific and molar conductivity (Numerical problems are expected, theoretical questions related to SI units are also expected)
4. Variations of conductivity with concentration (Theoretical question can be asked)
Kohlrausch’s Law (Numerical problems are expected)
1. Electrolysis and law of electrolysis (Faradays’ laws are also important)
2. Dry cell-electrolytic cells and Galvanic cells (Theoretical question can be asked)
3. Lead accumulator (Theoretical question can be asked)
4. EMF of a cell (Numerical problems are expected)
5. Standard electrode potential (Very important)
6. Nernst equation and its application to chemical cells
Relation between Gibbs energy change and emf of a cell
1. Fuel cells (Theoretical questions are expected)
2. Corrosion (One should remember chemical equations)
Chapter-4 : Chemical Kinetics
1. Rate of a reaction (Average and instantaneous)
2. Factors affecting rate of reaction: concentration, temperature, catalyst Conceptual questions are expected
3. Order and molecularity of a reaction (Very important)
4. Rate law and specific rate constant (Very important)
5. Integrated rate equations and half-life (only for zero and first-order reactions)
Concept of collision theory (elementary idea, no mathematical treatment)
1. The activation energy (Very important, effect of temperature)
2. Arrhenius equation (Very important)
Chapter-5 : Surface Chemistry
1. Adsorption – physisorption and chemisorption (Very important)
2. Factors affecting adsorption of gases on solids Conceptual questions are expected
3. Catalysis
4. Homogenous and heterogeneous activity and selectivity
5. Enzyme catalysis colloidal state distinction between true solutions
6. Colloids and suspension
Lyophilic, lyophobic multi-molecular and macromolecular colloids (Very important)
1. Properties of colloids
2. Tyndall effect (Very important)
3. Brownian movement (Very important)
4. Electrophoresis
1. Emulsion – types of emulsions
Chapter-8 : d and f Block Elements
1. Electronic configuration, occurrence and characteristics of transition metals General trends in properties of the first-row transition metals – metallic character ionization enthalpy (very important) oxidation states (very important) ionic radii colour catalytic property magnetic properties interstitial compounds (very important) alloy formation Preparation and properties of K2Cr2O7 and KMnO4
2. Lanthanoids – Electronic configurationOxidation states Chemical reactivity and lanthanoid contraction and its consequences
3. Actinoids – Electronic configuration, oxidation states and comparison with lanthanoids
Chapter-9 : Coordination Compounds
1  Ligands
2. Coordination number, colour, magnetic properties and shapes ( very important)
3. IUPAC nomenclature of mononuclear coordination compounds
4. Bonding, Werner’s theory VBT (very important) CFT (very important)
5. Structure and stereoisomerism (very important)
Chapter-12 : Aldehydes, Ketones and Carboxylic Acids
Aldehydes and Ketones: Nomenclature Nature of carbonyl group Methods of preparation Physical and chemical properties Mechanism of Nucleophilic addition (very important) Reactivity of alpha hydrogen in Aldehydes: Uses
Carboxylic Acids
1. Nomenclature Acidic nature
2  Methods of preparation (very important)
3. Physical and chemical properties (very important)
4. Uses
Chapter-13 : Organic compounds containing Nitrogen
Amines: Nomenclature Classification Structure Methods of preparation (most important) Physical and chemical properties Uses Identification of primary, secondary and tertiary amines (very important)
CBSE Class 12 Chemistry Important Topics
CBSE Class 12 Term 2 2022: Most Important Biology Topics

Also Read: CBSE Class 12 Biology Best Study Materials

Also Read: CBSE Class 12 Biology Sample Papers

Given Below Are The Most Important Biology Topics For Board Exam 2022.

Chapter-8 : Human Health and Disease
1. Pathogens: parasites causing human diseases and their control
2. Basic concepts of immunology – vaccines: cancer, HIV and AIDs
3. Adolescence
4. Drug and alcohol abuse
Chapter-10 : Microbes in Human Welfare
1. Household food processing
2. Industrial production
3. Sewage treatment
4. Energy generation and microbes as biocontrol agents and biofertilizers
5. Antibiotics – production and judicious use
Chapter-11 : Biotechnology: Principles and Processes
1. Genetic engineering (Recombinant DNA technology).
Chapter-12 : Biotechnology and its Applications
1. Application of biotechnology in health and agriculture
2. Human insulin and vaccine production
3. Stem cell technology
4. Gene therapy
5. Genetically modified organisms – Bt crops; Transgenic Animals; biosafety issues, biopiracy and patents
Chapter-13 : Organisms and Populations
1. Organisms and environment
2. Habitat and niche
3. Population and ecological adaptations
4. Population interactions-mutualism, competition, predation, parasitism
5. Population attributes – growth, birth rate and death rate, age distribution
Chapter-15 : Biodiversity and Conservation
1. Concept of biodiversity
2. Patterns of biodiversity
3. Biodiversity conservation
4. Hotspots
5. Endangered organisms
6. Red Data Book
7. Biosphere reserves, national parks, sanctuaries and Ramsar sites
CBSE Class 12 Biology Important Topics

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