Option (d)- Bromine is both reduced and oxidised. In the oxidation process, the oxidation number of bromine changes from 0 (in Br2) to +5 (in... View Article
Tooth decay occurs when the pH of the mouth falls below 5.5. Tooth decays are very common nowadays. Cavities, also called tooth decay or... View Article
The water present in narrow soil spaces is called capillary water, available to plant roots for absorption. Capillary water is held by cohesion... View Article
A synthetic toxic chemical with ecological repercussions is Pesticides. Both natural and synthetic pesticides are effective at controlling... View Article
Nutrition is defined as the process of taking in food and converting it into energy and to other important nutrients that are required for life.... View Article
The greater the number of electron-withdrawing substituents, the greater the dispersal of the negative charge and hence stronger will be the... View Article
Answer: Celsius and Kelvin are two scales used to measure temperature. Both follow the same unit difference between each scale but with... View Article
ScO2+ does not exist. A cation is an ion that has lost one or more electrons, gaining a positive charge. A cation has more protons than... View Article
The pH of our digestive system is acidic due to the presence of HCl. Antacids are bases that give relief from pain and acidity. A common antacid... View Article
Examples of the range of variations observed in daily life are: Organisms vary greatly in size, from microscopic bacteria to elephants, whales... View Article
Lothar Meyer proposed that on arranging the elements to increase atomic weights, similarities appear in physical and chemical properties. Meyer... View Article
The sound waves enter the ear through the pinna and auditory canal and reach the tympanum or eardrum, where they are converted into mechanical... View Article
Forests help purify and increase the oxygen content in the air by absorbing carbon dioxide and releasing oxygen. It maintains the temperature of... View Article
Lead cannot burn in oxygen or air. Thus, it is a non-combustible substance. A combustible material is solid or liquid than can be easily... View Article
XeOF4 has a square pyramidal. The Central atom: Xe Xe contributes: 8 e− O contributes: 6 e− 4 × F contribute: 28 e− Total VSE: 14 Xenon... View Article
It develops into a yellowish body called corpus luteum, which means yellow body. This then starts producing progesterone while continuing to... View Article
Answer: A continuous and closed path of an electric current is called an electric circuit. An electric circuit consists of electric devices, a... View Article
The metallic body of electric appliances is connected to the earth using earth wire so that any leakage of electric current is transferred to the... View Article