Notes and Study material for Exams
Periodic Table and periodicity Criteria for a new element discovery Assessing if an element has been “discovered” is not a simple task. While reviewing the discovery profiles of the transfermium Elements in the early 90s’, IUPAC and IUPAP set up to establish a series of criteria that must be satisfied for the discovery of an … Read more
Preparation and properties of commonly used dyes Dye, substance used to impart colour to textiles, paper, leather, and other materials such that the colouring is not readily altered by washing, heat, Light, or other factors to which the material is likely to be exposed. Dyes differ from pigments, which are finely ground solids dispersed in … Read more
Work power and energy Work Work is a measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement. If the force is constant, work may be computed by multiplying the length of the path … Read more
Terminology related with Sound Amplitude Amplitude, the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path. The amplitude of a pendulum is thus one-half the distance that the bob traverses in moving from one … Read more
Health Education in India Medical education in global context has evolved over a period of time and so in India. With changing community needs, educational advancements and technological revolutions, we need to update the method of imparting knowledge and skills to the students. Major components of hidden curriculum like Communication skills, Attitude, Empathy, altruism, professionalism, … Read more
Health Problems in India At the face of it, India is a booming economy and one of the fastest growing in the world. Yet, over one third of income is spent towards food and related consumption and hence, social security support for health, Education, housing etc. becomes critical. However, over half a century post-independence, there … Read more
Remote sensing: principles, electromagnetic spectrum, components and applications Remote sensing, also called earth observation, refers to obtaining information about objects or areas at the Earth’s surface without being in direct contact with the object or area. Humans accomplish this task with aid of eyes or by the sense of smell or hearing; so, remote sensing … Read more
Quick Revision ( SCIENCE SERIES, Art 2): NUCLEAR TECHNOLOGY, RADIOACTIVITY and Its application Nuclear technology: Nuclear technology is technology that involves the nuclear reaction of atomic nuclei. Among the notable nuclear technologies are Nuclear Reactors, nuclear medicine and nuclear weapons. BASIC CONCEPTS: Nuclear Energy: The energy produced due to changes … Read more
Fuels are any material that store potential energy in forms, which upon burning in Oxygen liberates heat energy. Calorific value of fuel is the total quantity of heat liberated when a unit mass or volume of fuel is completely burnt. Higher or gross calorific value (HCV) in the total amount of heat produced … Read more
Usefulness of Plants and human affairs (utility) Food Plants are the main source of food for humans. Plants, unlike humans and animals, manufacture their own food. They do so by the process known as Photosynthesis in their green leaves by use of sunlight. They can convert and store the Light energy in the … Read more