general knowledge current affairs

In many industrial processes, the process of electrolysis is less efficient than expected from the Faraday's laws. The amount of material obtained during electrolysis is generally less than that expected due to: * Loss of energy during its flow through the system. * Some o..

Current Efficiency - In many industrial processes, the process of electrolysis is less efficient than expected from the Faraday's laws. The amount of material obtained during electrolysis is generally less than that expected due to: Loss of energy during its flow through the sys..

When electric current is passed through acidulated water, hydrogen gas is liberated at the cathode and oxygen at the anode. When hydrides of sodium, potassium and calcium are treated with water , they react in the cold to form hydroxides and hydroge..

You have learnt in the earlier chapters that flow of electrons constitutes an electric current and current can be generated from a battery or a generator. Scientists later discovered that there are many other ways of producing the stream of electrons. This knowledge ha..

The Biot - Savart's law enables us to write the general results for the magnetic field due to an arbitrary current distribution or it is an experimental law predicted by Biot and Savart dealing with magnetic field strength at a point due to a small current elemen..

Letter to the Editor - A letter to the Editor is generally written to express our opinions or feelings about a current happening or event, to make people aware of some important things that concern society, to bring to public knowledge and to the notice of the authorit..

This completes the five chapters under Unit-1 which has taught all those items (such as bricks, mortar, stores, etc., needed for construction of a house) which are the building blocks for observing, studying, understanding and developing the knowledge of science in general..

Dams contribute enormously to deforestation and the loss of biological diversity. They can also result in potentially huge accidents during disasters like earthquakes. The embracing of centralized mega water management and regulation has also led to two more criticisms. The politicization and mi..

Defibrillator - Fibrillation is abnormal and asynchronous contraction of the heart muscles. This reduces the proper effectiveness of heart pumping. Atrial fibrillation is irregular and faster contract ions of atria. It may occur in myocardial infarction and in rheumatic heart disease. Ventricular f..

An electric fuse is a device which is used to limit the current in an electric circuit. The fuse safeguards the circuit and the electrical appliances from being damaged. The fuse wire is generally an alloy of lead and tin. It has a low melting point and breaks the ci..