Raiganj University is one of the foremost universities in West Bengal. As per Raiganj University Act (West Bengal Act XXVI of 2014) the University was established on 3rd February 2015. It is located at the district headquarter of Uttar Dinajpur i.e. Raiganj in West Bengal, India. This University was established by upgrading a state aided …
To today’s students, Newton’s Laws of Mo tion are familiar and may seem easy to understand. But many educated people in 1687 still had medieval notions. They believed that planets and stars moved under their own power. They had no concept of gravity. They did not understand that “what goes up must come down.” Nor …
DALTON’S ATOMIC THEORY John Dalton, a British Chemists and scientists gave the Atomic Theory in 1808. This theory is popularly known as Dalton’s Atomic Theory in the honour of John Dalton. He gave the theory on the basis of Laws of Chemical Combination and explains them properly. In his theory he explains about atom. postulates …
Matter is any thing which has mass and occupies space. All solids, liquids and gases around us are made of matter. Scientist believe that matter is made of tiny particles that clump together. You cannot see these particles but you can see the matter, for example, a book, a car, a letter, a hand set, …
Reactions involving the change in the carbon skeleton through the rearrangement of the carbocation intermediate are collectively known as Wagner-Meerwein rearrangement. When neopentyl bromide is hydrolysed under SN 1 condition it Is found that instead of the expected neopentyl alcohol (Me3CCH20H), 2-methyl-butan-2-ol and 2-methyl but-2-ene are formed Similarty, neopentyl alcohol on dehydration gives 2-methyl-but-2-ene and …
There are several reactions that are conceptually related to carbene reactions but do not involve carbene, or even carbenoid, intermediates. Usually, these are reactions in which the generation of a carbene is circumvented by a concerted rearrangement process. Important examples of this type are the thermal and photochemical reactions of alpha-diazo ketones. When alpha diazo …
The transformation of alpha-haloketones to esters with rearranged carbon skeleton by the treatment with alkoxide ions is called Favorskii rearrangement. Alkali hydroxides or amines in place of metal alkoxides give acids or amides respectively. The subjects of this section are two reactions that do not actually involve carbocation intermediates. They do, however, result in carbon …
Class 10 Science Chapter2 Chemical Reactions and Equations notes of all topics with detailed explanation. You can prepare your Board examination from here because The notes is written by our Expert Theacher with many years experience. We provide Solution of NCERT question Answer and important intext question Acids, Bases and Salts Indicator : The chemical substance …
APPLICATION LETTER writing is an important channel of communication between people who are geographically distant from one another. In earlier times when the telephone and e-mail were not available, the only means of communication between people was through letters. Application Letter writing is a skill that has to be developed. Application letter for class12 are …
Thermodynamics Chemistry notes of all topics with short explanation. You can revision your Board examination from here because The notes is written by our Expert Theacher with lots of experience. We provide Solution of NCERT question with important intext question System : Specific part of universe in which thermodynamic observations are made. Surroundings : Everything …