2016-08-19 08:49
Water is the most common liquid on earth which covers 71.4% of earth surface. It is the only chemical substance on earth that exists naturally in 3 states (solid, liquid and gas (vapors)). B… Read More
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Why Do Old Books Become Yellow With Time Blog
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This is due to the presence of lignin. As we know paper is made from wood, wood in turn is made of carbohydrates like cellulose and lignin. Lignin is very complicated molecule that adds hardness to wood.
2016-08-19 08:49
Water is the most common liquid on earth which covers 71.4% of earth surface. It is the only chemical substance on earth that exists naturally in 3 states (solid, liquid and gas (vapors)). B… Read More
2016-08-19 08:08
A chemical reaction is a process in which new substances are formed with completely new properties. The substance which reacts in a chemical reaction are called reactant and the new substanc… Read More
2016-08-19 07:33
Ozone is a rare formed oxygen. It has 3 oxygen atoms in it, arranged in a tiny triangle. The 3 atoms don’t get along well in this arrangement, so after some time ozone breaks up to rel… Read More
2016-08-19 07:04
We all have seen that old books become yellow and brittle with time. This is due to the presence of lignin. As we know paper is made from wood, wood in turn is made of carbohydrates like cel… Read More
2016-08-01 05:47
Elements of group15 have 5 valence electrons in their valence shell. So they exhibit various oxidation state from – 3 to +5 as discussed below. Negative oxidation state:- These e… Read More
2016-07-20 10:05
Group 15 elements consists of following elements Electronic configuration: the atoms of group 15 have 5 valence electrons in the outermost shell 2 in s and 3 in p subshell General electronic… Read More
2016-07-20 08:46
Primary Secondary and Tertiary alcohols can be distinguished by the following test/reactions. 1. Luca’s Test: In this test alcohols are treated with an equimolar mixture of concentrate… Read More
2016-07-20 05:48
Finkelstein Reaction: When alkyl halide reacts with sodium iodide in the presence of Acetone. Alkyl iodide and Sodium halide is formed. For ex. Swarts Reaction: When alkyl Bromide or Chlorid… Read More
2016-07-18 05:15
(1) Mass Percentage: Mass % of component = (2) Volume Percentage: Volume % of component = (3) Parts Per million: &nb&hell…Read More
2016-06-17 09:56
Phenol is also called Carbolic acid. It was first isolated from coal Tar. But nowadays it can be manufactured synthetically (1) From Benzene Sulphonic Acid (2) From Diazonium Salts (3) From… Read More
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