Primary Pollutants and Secondary pollutants
Primary pollutants are directly emitted from the sources. Examples of primary pollutants are carbon monoxide, carbon dioxide, sulphur dioxide and benzene etc. Secondary pollutants are not emitted directly. They are formed from the combination of primary pollutants with some other compound. Examples of secondary pollutants are Ozone, Formaldehyde, More...
Shiva Thapa (56kg) was the lone Indian boxer to make the final after Olympic-bound Vikas Krishan (69kg) settled for a bronze medal
Shiva Thapa (56kg) was the lone Indian boxer to make the final after Olympic-bound Vikas Krishan (69kg) settled for a bronze medal following his loss in the semifinal of the 43rd men’s and women’s Grand More...
Chemistry Quiz
1.Global warming is due to increased production of Answer : Carbon dioxide 2. Which acid is present in lemon Answer : Citric acid 3.Brass is an alloy of copper and Answer : Zinc 4. The hardest natural substance More...
Endosulfan and its Controversy
Endosulfan is an organochlorine compound that is used as an insecticide and acaricide. This colourless solid has emerged as a highly controversial agrichemical due to its acute toxicity, potential for bioaccumulation, More...
What is a Sodium Silicate and How to Manufacture it
Sodium Silicate (Na2o, Sio2) Sodium Silicate is a compound mixture of sodium oxide i.e. Na2o with silica sand i.e. Sio2 with water. Sodium silicate is also called water glass. There are two process to manufacture More...
Richard Heck, Ei-ichi Negishi and Akira Suzuki-The Nobel Prize Winners in Chemistry
Three scientists won the Nobel Prize in chemistry today for developing a process that, among other things, helps synthesize medicines. Richard Heck, Ei-ichi Negishi and Akira Suzuki were cited for their work in More...
Difference between Covalent bonds and Ionic bonds
Covalent bonds are chemical bonds between two non-metals, for example between H and O in water (H2O). As they are both non-metals—which need to gain electrons—they have to share, so their outer shells cross More...
The phenomenon of Chemical bonding
Chemical bonds are what join together atoms. When two or more atoms are in a chemical bond they stay joined unless the needed amount of energy or more is transferred to the bond. Something different can then More...
What is a Plastic,Who invented the Plastic
A plastic is a material that can change its shape, so many things can be made of plastic. There are many types of plastic. Some can be shaped only when they are freshly made; then they become hard afterwards. More...
Chemistry-Important Laws in Chemistry
Boyle’s Law It states that when any gas is expanded or compressed at constant temperature, its volume (V) and pressure (P) are inversely proportional to each other. P ∞ 1/V (or) PV = constant Charle’s More...