Kabita Sharma 
Cholesterol is the most abundant sterol in tissues and plasma. It is present in animal or human cells either in free or stored or combined form as cholesteryl ester. It is the fat-like waxy substance that is obtained from the … Read more
Organosilicon compounds are organometallic compounds that contain Si-C bonds. As the Si-C bond is extremely hard and stable, many organosilicon compounds containing Si-C have been synthesized. However, silicon has little tendency to form a bond with itself and does not … Read more
An aromatic nucleophilic substitution reaction is the replacement of hydrogen or substituent on an aromatic ring by a nucleophile. Aromatic rings do not undergo the aromatic nucleophilic substitution reaction under ordinary conditions. The reason for this low reactivity of the … Read more
Coordination compounds are complex compounds consisting of a central metal atom surrounded by nonmetal atoms or groups of atoms called ligands that are chemically linked to it. E.g., [Co(NH3)6]Cl3, [CoCl(NH3)5]Cl2 Isomerism in Coordination compounds Isomers are compounds that have the … Read more
Pericyclic reactions are concentrated reactions that proceed through the cyclic transition state. It requires light or heat and is highly stereospecific. Pericyclic reactions involve the cyclic rearrangement of π or σ electrons in a single concerted step. Since the electronic … Read more
What are Alkali metals? Elements of group IA are called alkali metals. The word alkali is derived from the Arabic word alquli, meaning ashes of plants, because the plant ashes are particularly rich in sodium and potassium carbonates. In the … Read more
The titrimetric analysis is an analytical method involving measuring the volume of a reagent reacting stoichiometrically with the analyte. The volumetric analysis measures the volume of the solution of known concentration required to react completely with the analyte. The volumetric … Read more
SN1 reaction of a two-step reaction mechanism. In which the formation of carbocation takes place before the nucleophile approaches the substrate. Generally, secondary and tertiary haloalkanes show SN1 reactions. The SN2 reaction is a concerted reaction in which the attack … Read more
The bimolecular nucleophilic substitution reaction (SN2 reaction) is a one-step reaction that involves the transition state. The attack of a nucleophile on the substrate and the departure of the leaving group occur simultaneously in this reaction. Since both the substrate and … Read more