Class 11 Chemistry Chapter 12 Organic Compounds – Some Basic Principles Organic compounds are obtained from natural resources. When these compounds are obtained, they are in their impure form. Hence, several methods of purification of organic compounds, they are sublimation, crystallization, distillation, differential extraction, chromatography. In this blog, I will give you detailed description of […]
Science
Chemistry of Hydrogen
Class 11 Chemistry Chapter 9 Hydrogen Hydrogen is one of the important elements on the Earth. It is constituent of water which is basic need of life on Earth. In this blog we will discuss in detail about hydrogen, its occurrence, its properties and uses. Occurrence of Dihydrogen Dihydrogen is most abundant in universe. About […]
What is electric current?
Class 10 Science Chapter 4 Electric Spark Electric Current Electric current or Electricity is important in day to day life. Consider, movement of electrons in wire. When metallic wire is not connected to a battery, the free electrons move in random direction. Metallic conductor consist of large number of free electrons, these electrons are very […]
Respiration in Plants and Animals
Class 10 Science Chapter 10 Life’s Internal Secrets “Respiration is process of producing energy with intake of oxygen and release of carbon dioxide in body.” Depending on the availability of oxygen, respiration is classified as aerobic respiration and anaerobic respiration. In this blog, we will discuss in detail about respiration, it’s types, processes, and many […]
Heat Transfer: Conduction, Convection and Radiation
Class 11 Physics Chapter 11 Thermal Properties of Matter The universal law of conservation of energy states that, “Energy can neither be created nor be destroyed, it changes from one form to another.” Heat is such form of energy. Heat transfer takes place when there is temperature difference between system and its surrounding. In general, […]
The Concept of Carnot Cycle
Class 11 Physics Chapter 12 Thermodynamics Reversible process is one in which system and surrounding can return to their initial states and final states. But reversible process is a theoretical concept. To build such machine. To design such machine having efficiency close to reversible process. Sadi Carnot, a French Engineer tries to find out solution […]
The Carbon Family
Class 11 Chemistry Chapter 11 The p-Block Elements Carbon family include elements Carbon(C), Silicon (Si), Germanium (Ge), Tin (Sn), Lead(Pd). The general electronic configuration of this family is ns2 np2 that means these elements have valency 4. In nature Carbon is seventeenth most abundant element by mass in earth’s crust. However, carbon is found in […]
What are Semiconductors?
Class 12 Physics Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits Electronic devices are characterised by the ability to control the flow of electron. Such devices are made of semiconductors. To understand what are semiconductors, one must know about conductors and insulators. Material having high conductivity and low resistivity are conductors. However, material with […]
The Story of Photon
Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter In this blog we will speak in detail about interesting behaviour of light. Light has the ability to show wave nature as well as particle nature but how? Let’s start knowing. The phenomenon of photoelectric effect confirmed that light is made of small energy […]
The Concept of Photoelectric Effect
Class 12 Physics Chapter 11 Dual Nature of Radiation and Matter Photoelectric effect occurs when light of frequency greater than threshold frequency fall on metal plate, electrons get emitted from the metal surface. In this blog we will talk minor details of photoelectric effect. Story of Photoelectric Effect Heinrich Hertz, was experimenting on the electromagnetic […]