Change log: page 8
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2092 changes Latest 6 Nov 2026
Page 8 of 11 · 200 changes on this page
November 2026
40 new topics in Biology
Molecular Basis of Inheritance
Evolution
Origin of life Evolution of life forms Evidences for evolution Adaptive radiation Biological evolution Mechanism of evolution Hardy–Weinberg principle Modern synthetic theory A brief account of evolution Origin and evolution of man
Human Health and Disease
Health and disease Common diseases in humans Dengue and chikungunya Immunity HIV and AIDS Cancer Drug, alcohol and tobacco abuse
Microbes in Human Welfare
Microbes in household products Microbes in industrial products Microbes in sewage treatment Microbes in biogas production Microbes as biocontrol agents Microbes as biofertilisers
Biotechnology: Principles and Processes
Principles of biotechnology Tools of recombinant DNA technology Processes of recombinant DNA technology
Biotechnology and Its Applications
Biotechnology in agriculture Biotechnology in medicine Transgenic animals Ethical issues
Organisms and Populations
Ecosystem
Structure and function Productivity Decomposition Energy flow Ecological pyramids
Biodiversity and Conservation
40 new topics in Chemistry
Coordination Compounds
Experiment: double salts Isomerism Bonding: VBT and CFT Metal carbonyls Importance and applications
Haloalkanes and Haloarenes
Classification Nomenclature Nature of C–X bond Preparation of haloalkanes Preparation of haloarenes Physical properties Chemical reactions Polyhalogen compounds
Alcohols, Phenols and Ethers
Classification Nomenclature Structures of functional groups Alcohols and phenols Experiment: tests for –OH groups Commercially important alcohols Ethers
Aldehydes, Ketones and Carboxylic Acids
Carbonyl group: names and structure Preparation of aldehydes and ketones Physical properties of aldehydes and ketones Reactions of aldehydes and ketones Experiment: tests for aldehydes and ketones Experiment: preparation of iodoform Uses of aldehydes and ketones Carboxyl group: names and structure Preparation of carboxylic acids Physical properties of carboxylic acids Chemical reactions of carboxylic acids Experiment: tests for the carboxyl group Uses of carboxylic acids
Amines
Structure of amines Classification of amines Nomenclature of amines Preparation of amines Physical properties of amines Chemical reactions of amines Experiment: tests for the amino group
50 new topics in Mathematics
Matrices
Matrix and order Types of matrices Operations on matrices Transpose of a matrix Symmetric and skew symmetric Invertible matrices
Determinants
Determinant Area of a triangle Minors and cofactors Adjoint and inverse Solving linear systems
Continuity and Differentiability
Continuity Differentiability Exponential and log functions Logarithmic differentiation Parametric derivatives Second order derivative
Application of Derivatives
Rate of change Increasing and decreasing Maxima and minima
Integrals
Anti derivatives Substitution and identities Particular integrals Partial fractions Integration by parts Definite integral Fundamental theorem Substitution with limits Properties of definite integrals
Application of Integrals
Area under curves Area between curves
Differential Equations
Order and degree General and particular solutions Solving first order equations
Vector Algebra
Vectors: basic concepts Types of vectors Addition of vectors Scalar multiple and components Dot and cross products
Three Dimensional Geometry
Direction cosines and ratios Equation of a line in space Angle between two lines Shortest distance between lines Line of shortest distance
Linear Programming
Probability (Class 12)
Conditional probability Multiplication theorem Independent events Bayes’ theorem Probability distribution
17 new topics in Biology
Sexual Reproduction in Flowering Plants
Flower: a fascinating organ Pre-fertilisation: structures and events Double fertilisation Post-fertilisation: structures and events Apomixis and polyembryony
Human Reproduction
The male reproductive system The female reproductive system Gametogenesis Menstrual cycle Fertilisation and implantation Pregnancy and embryonic development Parturition and lactation
Reproductive Health
Reproductive health: problems and strategies Population stabilisation and birth control Medical termination of pregnancy (MTP) Sexually transmitted infections (STIs) Infertility and assisted reproduction
50 new topics in Physics
Alternating Current
Series LCR circuit Power in ac circuits Transformers
Electromagnetic Waves
Displacement current Electromagnetic waves Electromagnetic spectrum
Ray Optics and Optical Instruments
Spherical mirrors Refraction Experiment: glass slab Total internal reflection Lenses Experiment: focal lengths Prism Experiment: prism i–δ graph Optical instruments
Wave Optics
Huygens principle Refraction and reflection by Huygens principle Coherent and incoherent addition Young’s double-slit experiment Diffraction Polarisation Brewster’s law
Dual Nature of Radiation and Matter
Electron emission Photoelectric effect Experimental study of the photoelectric effect Photoelectric effect and the wave theory Einstein’s photoelectric equation Photon Wave nature of matter
Atoms
Rutherford’s nuclear model Atomic spectra Bohr model Line spectra of hydrogen De Broglie and Bohr’s postulate
Nuclei
Composition of the nucleus Size of the nucleus Binding energy Nuclear force Radioactivity Nuclear energy
Semiconductor Electronics: Materials, Devices and Simple Circuits
Metals, insulators and semiconductors Intrinsic semiconductor Extrinsic semiconductor p-n junction Semiconductor diode Junction diode as a rectifier Zener diode LED, photodiode and solar cell Experiment: identifying components Logic gates