Class 10 Science Chapter1 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 lots of experience. We provide Solution of NCERT question Answer and important intext question Chemical Reactions and Equations Physical changes : The changes …
In our daily life we look various vacancy in different different department but we donot know how to apply on this. What is the actual procedure to applying a job. one thing always come in our mind we should apply with resume and educational certificate but this is not professional process. We must submitted our …
Assam is a land of scenic beauty. which yet has unexplored mountain ranges, evergreen forests, rare wildlife. All are known from history of Assam Mesh of rivers dominated by the Brahmaputra and Barak, expansive tea gardens, oilfields, varied fairs and festivals and pilgrims’ trails. Assam Located in North East India. The latitude of Assam 24° …
Lachit Borphukan was born on 24 November 1622 to Momai Tamuli Borbarua and Kunti Moran. His father was the commander-in-chief of the Ahom army. In Assam also a great patriot called Lachit Barphukan was born. He was a valiant fighter who fought for his motherland, Assam, Now let us read his story from history of …
The quantity of a substance that contains as many elementary entities, such as atoms, molecules ions or formula units as the number of atoms in exactly 12 g of C-12. In modern terms, gram-molecule and gram-atom are termed as a mole of molecules and a mole of atoms respectively e.g., 1 gram-molecule of oxygen and …
Introduction: Of all the great men, I do admire Mahatma Gandhi most. In Mahatma Gandhi most. In Mahatma Gandhi I find many rare qualities, for which every Indian owes him a lot. I regard him the true ideal of a great man. Early Life: Mohandas Karamchand Gandhi, popularly as Mahatma Gandhi was born in October 2, 1869 …
An Acid – catalyzed conversion of polysubstituted ethylene glycols to carbonyl compounds as ketones or aldehydes with elimination of water is known as pinacol or pinacol-pinacolone rearrangement. When 1,2 diols such as 2,3 dimethyl 2,3 butenediol called pinacol on treatment with minarel acid (HCl, H2SO4) they undergo dehydration and rearrangement to form ketone commonly known as …
The Fries rearrangement is an organic reaction which involves the conversion of phenolic esters into hydroxyaryl ketones on heating in the presence of a catalyst Such as HF, AlCl3, BF3 etc. Phenolic esters on heating with aluminium trichloride (Lewis acid) give o and p- acyl phenol. This is known as Fries rearrangement. A mixture of ortho- and …
The Beckmann Rearrangement process is an organic reaction that is useful in changing an oxime to that of an amide under some acidic conditions. When Ketoximes on treatment with an acid catalyst undergo rearrangement to give N – substituted amides is known as Beckmann rearrangement. Characteristics: Anionotropic rearrangement Migration Carbon to electron deficient Nitrogen R & R’ …