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...

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By admin On Saturday, March 24th, 2012
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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...

By admin On Friday, March 11th, 2011
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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...

By admin On Wednesday, December 1st, 2010
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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...

By admin On Tuesday, November 2nd, 2010
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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...

By admin On Wednesday, October 6th, 2010
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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...

By admin On Friday, July 23rd, 2010
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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...

By admin On Friday, July 23rd, 2010
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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...

By admin On Friday, July 23rd, 2010
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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...

By admin On Sunday, June 20th, 2010
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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...

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