Tnpsc and Upsc Notes Pdf
Basics of Nuclear Science In 1803, John Dalton considered elements are made of identical atoms. J. J. Thomson discovered electrons, also called Cathode rays in an experiment. Goldstein found positive rays. We name these positive rays Protons, by Rutherford. James Chadwick in 1932 discovered the chargeless particles called Neutrons. Currently, there are other particles found … Read more
The universe is all of space and time and its contents. The universe consists of all of existence, fundamental interaction, physical processes, and all forms of energy and matter and the structures they form, from the sub-atomic particles to entire galaxies. Three most basic types of Universe are and is concerning three possible shapes, that … Read more
Rote Learning Rote Learning is something, that a child needs the foundation to be strong needs rote learning. It is a type of learning, that requires a child or student needs to remember the facts, and knowledge without a need to understand. It is just like storing data on a memory card. Such learning is … Read more
Disease Disease is a condition of the body or a part of it in which functions are disturbed Human Diseases It is divided into types Congenital and Acquired Diseases. The Acquired disease is further divided into Communicable and Non- Communicable disease. Communicable Disease Bacteria Virus Protozoa Fungi Helminth Non Communicable Diseases It is further divided … Read more
Tnpsc: Genetics, DNA, Genes and Chromosomes What is Genetics? Genetics is the branch of biology that deals with the genes, genetic variation, and heredity of living organisms. What is heredity? It is the character transmission from one generation to the next generation. What is Variation? It is the differences exhibited by the individuals of the … Read more
Uses of Concave Mirror // Note: Images formed by Concave mirrors are diminished and inverted, yet they are used in telescopes. The head mirror used by ent doctors is concave or convex? The heart mirror used by End doctors is a Concave mirror. It is because the concave mirror combines all the light rays from … Read more
This article is written for Tnpsc General Science -Biology, for the topic Health and Hygiene.
This article is written for the Tnpsc exam for the topic “Acids, Bases, Salts“. This is prepared from Samacheer Kalvi’s books. Let’s study acid, bases, salts, and how are acids, bases, and salts distinguished from one another? Acid and base difference Acids, Bases, and Salts are used in daily life. Ex: Soap, Juice, Detergent, etc. … Read more
Main Concepts of Life Science Life science definition The life sciences or biological sciences comprise the branches of science that involve the scientific study of life and organisms – such as microorganisms, plants, and animals including human beings. Concepts of life science Life science is one of the two major branches of natural science, the … Read more
Matthias Schleiden was a German botanist who made significant contributions to the development of the cell theory. In 1838, he published a book called “Contributions to the Phytogenesis” in which he proposed that all plants are made up of cells or derivatives of cells. He also stated that the cell is the basic unit of … Read more
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