chemistry

JPSC Prelims notes for Science and Technology

Science & TechnologyFor Notes Click on the topics [su_posts template=”templates/list-loop.php” posts_per_page=”100″ tax_term=”1321″ tax_operator=”0″ order=”desc”] Physical Science (I)System of Units: MKS, CGS and SI (II)Definition of speed,velocity, gravity, mass, weight, force, impact, work,power and energy. (III)Solar System, relative position of Earth with respect to Sun and other planets, movement of earth and moon in solar system, lunar and … Read more

Chemistry of ores and metals

Ore An ore is a special type of rock that contains a large enough amount of a particular mineral (usually a Metal) to make it economically practical to extract that mineral from the surrounding rock. Not all Minerals are found in a large enough amount in one location to make it worth it to remove the ore … Read more

Molecules

 Molecules Molecule, a group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance. The division of a sample of a substance into progressively smaller parts produces no change in either its composition or its chemical properties … Read more

Atomic structure

Atomic Structure In 1897 J.J. Thomson discovered electron as a constituent of atom. He determined that an electron had a negative charge and had very little mass as compared to that of the atom. Since an atom was found to be electrically neutral it was inferred that some source of positive charge must be present … Read more

Fertilizers – Elements Required In Plant Growth

Fertilizers – Elements Required In Plant Growth Fertilizers are substances that are added to SoilSoil to improve plant growth. They can be organic or inorganic, and they provide plants with the nutrients they need to grow healthy and strong. There are 17 essential elements that plants need for growth. These elements are divided into two … Read more

Science and Technology in Ancient Period: Mathematics, Astronomy, Physics, Chemistry, Botany, Zoology, Physiology and Medicine (including Surgery), Ship- building, Mining and Metallurgy, Engineering and Architecture

Science And Technology In Ancient Period: Mathematics, Astronomy, Physics, Chemistry, Botany, Zoology, Physiology and Medicine (including Surgery), Ship- building, Mining and Metallurgy, Engineering and Architecture Like people in any other part of the world Indians too, have a rich legacy of scientific ideas. A desire to now the unknown, accompanied with experimentation and observation have … Read more

Quick Revision- Contribution of Indian Scientist

Contribution of Indian  Scientist:   Scientist Achievement Homi Jehangir Baba Father of Indian Nuclear Programme, Carried out first nuclear test 1974, Atomic energy establishment was renamed Bhabha Atomic research centre. Venkatraman Ramakrishna Indian origin biologist cum scientist won nobel prize in 2009 in chemistry. He pioneered in the studies of the structure and function of … Read more

Miscellaneous Facts:

  1.The Marathas were Scindia (Gwalior), Holkar (Indore), Gaekwar (Baroda), Bhonsle (Nagpur).   2.Sawai Jai Singh of Amer (Jaipur) had Euclid’s ‘Elements of Geometry) & several works on Trigonometry were translated into Sanskrit. Banda Bairagi was baptised as Banda Singh Bahadur by Guru Gobind Singh.   3.Alfonso d’ Albuquerque came to India as The Portuguese … Read more

Module 2: General Science

Rasfreenotes team presents  Module 2: General Science to the RAS/RTS Aspirants. Module 2 consists of following sections:- Physics Biology Chemistry The importance of general science can be accessed by the number of questions from the section. You could buy module 2 in just 99 INR for promotional period. For any doubt leave a mail @rasfreenotes@gmail.com, Science is … Read more

Metabolism

Metabolism  is the set of life-sustaining chemical transformations within the cells of organisms. The three main purposes of metabolism are the conversion of food/fuel to energy to run cellular processes, the conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some Carbohydrates, and the elimination of nitrogenous wastes. These enzyme-catalyzed reactions allow … Read more