An electric cell is a device that converts chemical energy into electrical energy and maintains a constant flow of charge in a circuit. It consists of two rods of different…
Transistors It is such an electronic device made of p and n-type semi conductor which is used in place of triode bulb. It was invented in 1948 by American scientists…
In 1648, Glouber obtained Hydrogen Chloride Gas by heating sodium chloride (common salt) and concentrated sulfuric acid. Debi proved in 1810 that it is a compound of hydrogen and chlorine.Hence…
5. Which of the following, set of molecules will have zero dipole moment? (NEET 2020)(a) Ammonia, beryllium difluoride, water, 1, 4-dichlorobenzene(b) Boron trifluoride, hydrogen fluoride, carbon dioxide, 1, 3-dichlorobenzene(c) Nitrogen…
Oxidation Number or Oxidation state The charge present on an atom or group of atoms is called the oxidation number or Oxidation State of that atom or group of atoms.…
Iodine History Iodine was discovered by Bernard Courtois in 1811. Its vapors are purple in colour. For this reason Galusek named it Iodine (Greek: Iodas = Violet) in 1813. Humphry…