Phenols/unit-11
Preparation of phenols: Phenols can be prepared by the following methods. 1) From sodium benzenesulphonate: Phenol can be prepared by … Read more
Alcohols/unit-11
Alcohols: Alcohols are the compound in which hydroxyl (-OH) group is attached to saturated carbon atom. The hydroxyl group is … Read more
Carboxylic acid/unit-12
Carboxylic Acid: Organic compounds which contain the carboxyl functional group (-COOH) are called the Carboxylic acids. Their general formula is: … Read more
Chemical Bonding/unit-4
Chemical Bond:- “The attractive force which holds together the constituents particles (atoms, ions, or molecules) in a chemical species is … Read more
uses and environmental effects of dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons & DDT.
Dichloromethane (methylene chloride), CH2Cl2 :- It is prepared industrially by the direct chlorination of methane. The mixture so obtained is … Read more
Haloarenes i.e. aromatic halogen compound
Aromatic halogens are the compounds which are obtained by the replacement of one or more hydrogen atoms of aromatic hydrocarbons … Read more
Organic compounds with functional groups containing oxygen (Aldehyde & ketones)
Aldehydes and Ketones: Both aldehyde and ketones containing a carbon-oxygen double bond (>C=O). These are also called carbonyl group. Aldehyde … Read more
Classification of Elements and Periodicity in Properties
Introduction: Upto the end of seventeenth century, only 31 elements were known. Therefore, it was very easy to study and … Read more
Discovery of Electron
Discovery of Electron: The first of the subatomic particles to be discovered was the Electron (e). The knowledge about the … Read more
Basic concept of chemistry/unit-1
Basic Concept of Chemistry: Matter: – Matter is anything that occupies some space, posses mass, and offer resistance to any … Read more