term paper

Depending upon the direction of the solvent travel, paper chromatography is termed as ascending or descending type. When the solvent travels upward on the paper, it is termed as ascending paper chromatography and descending paper chromato..

The adsorbent is termed as the stationary phase. Suitable adsorbents that are commonly used are magnesium oxide, alumina, cellulose, paper, silica gel et..

Static Electricity - Static electricity was known to people more than 2500 years ago. The Greeks knew about the attractive property of the resin amber. They knew that by rubbing amber with cloth, it could be made to attract small feathers. The Greek name for amber was 'elektron'. After about a thou..

Photocopier - Then term 'Xerography'; the use of Photoelectric phenomena to transfer an image from one sheet of paper to another comes from the Greek words for "dry" and "writing". Dry copying is based on the principle that materials with opposite electrical charges attract one ..

In order to represent the structures of the combining elements in the most simplest way in terms of the valence electrons on paper, Lewis proposed the following notation: The symbols of the element is written first. This represents the nucleus of the element with all the inne..

? One has not anticipated some of the impacts of industrial and technological advancement. When the industrial revolution started some 250 years ago, the world population was at 600 million - that seems like a lot of people but now the world population is now almost ten times at 6 billion and will ..

The electrochemical cell based on this reaction is set up as follows. Zinc sulphate solution is taken in a beaker and a zinc rod is dipped in to it. Similarly copper sulphate solution is taken in another beaker and a copper strip is dipped in to it. An inverted U tube containing concentrated soluti..