Yojana Magazine is an important source of material for the UPSC exam. The monthly magazine provides details of major government schemes and... View Article
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a bluish-silver, lustrous metal that tarnishes in moist air. Zinc is... View Article
The term density (ρ) is defined as the mass of a substance per unit volume occupied by it. The density of spirit (ρ = 780 kg/m³) denotes that one... View Article
Coefficient of thermal Conductivity is independent of dimensions, temperatures and other external factors. Coefficient of Thermal Conductivity is... View Article
Zero degrees Celsius is now defined as 273.15K. One degree Celsius is equal to one Kelvin, boiling point of water is equal to 273.15 + 100 =... View Article
The monomers of the terylene are the ethylene glycol (1,2 ethanediol) and Terephthalic acid (1,4 benzene dicarboxylic acid). Terylene fabric is a... View Article
Bond Order = number of bonding electrons – number of antibonding electrons/2. For CO2, there is a total of 16 electrons, 8 of which are... View Article
The compound zinc oxide (ZnO) is called philosopher's wool. ZnO residual has a wool like texture that's why people named it the 'philosopher's... View Article
The metalloids separate the metals and nonmetals on a periodic table. Elements to the left of the line are considered metals . Elements just to... View Article
Oxalic acid is an organic compound with the formula C 2 H 2 O4. Tomato is the natural source of oxalic acid. It is a colourless, crystalline,... View Article
The IUPAC name of [Ag (NH3)2][Ag(CN)2] is diammine silver (I) dicynido argentate(I). It is an ionic complex with ON of silver in cation. Ligands... View Article
Aneroid barometers are used for reading pressure in homes and recreational boats. An aneroid barometer has no liquid. It is light and portable,... View Article
Coagulation value is the millimoles of an electrolyte that must be added to 1 L of a colloidal solution for complete coagulation. The phenomenon... View Article
Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. In the visible... View Article
Metalloids are placed on the right - hand side of the periodic table. Metalloids occupy a diagonal area running from boron to tellurium, in the... View Article
False. Kerosene is a derivative of fossil fuel. Kerosene is derived after undergoing a huge series of chemical process which includes drilling,... View Article
CO2 is a gas. Therefore, it will have low inter-molecular force of attraction between the molecules of carbon dioxide. Carbon dioxide not only... View Article
Yellow lies between red and green. If you mix red and green you will get a yellow hue. Yellow is a primary colour. The three primary colors are... View Article
