Physical properties of periodic table:- What is Atomic Size? Atomic size is the distance between the centre of the nucleus of an atom and its outermost shell. What is Atomic Radius? An atomic radius is defined as the “shortest distance between the atom’s nuclei and the outermost shell of the atom. “ In general, the atomic radius decreases […]

Werner’s Theory Werners theory of coordination compounds, isomers in coordination compounds, primary valence, secondary valence, etc. Werner, a well-known scientist, proposed his theory of coordination compounds in 1823, which describes the formation and structure of complex compounds and was later named Werner’s Theory of Coordinate Compounds. He was given the Nobel Prize for this theory, […]

Introduction:- • The process of formation of male gamete i.e sperm is called spermatogenesis. • It occurs in the seminiferous tubules of testes. • The germinal epithelium of seminiferous tubules largely consists of cuboidal primary germ cell which give rise to sperm by the process of spermatogenesis. • It occurs in two successive steps such […]

HYSTERESIS CURVE:     The ferromagnetic materials show a certain relation between intensity of magnetization and strength of magnetic field. This property is called hysteresis. FEATURES: When a substance is slowly magnetized the intensity of magnetization B increases with magnetic field intensity H. OA path is shown. At point ‘A’, magnetization becomes constant. This point is […]

Probability: Sample Space: The set of all possible outcomes of an experiment is called the sample space. It is denoted by ‘S’. Each outcome is called element of sample space or simply a sample point. Example:- 1.Flipping/tossing a coin. S={H,T},|S|=2 2.Tossing two coins at a time. S={HH,TT,HT,TH},|S|=4 3.A coin and a dice both are tossed. […]

What is Database? The database is a collection of inter-related data which is used to retrieve, insert and delete the data efficiently. It is also used to organize the data in the form of a table, schema, views, and reports, etc. For example: The college Database organizes the data about the admin, staff, students and faculty […]

ENDOPLASMIC RETICULUM (ER) (i) Introduction and Discovery The E.R. is another important cell organelle that is present in all eukaryotic plant and animal cells. But these are absent in prokaryotic cells. The E.R. was first discovered by Garnier in the year 1897. The structure of E.R. was described by Porter in the year 1953. The […]

UNIX operating system UNIX is a powerful Operating System initially developed by Ken Thompson, Dennis Ritchie at AT&T Bell laboratories in 1970. It is prevalent among scientific, engineering, and academic institutions due to its most appreciative features like multitasking, flexibility, and many more. In UNIX, the file system is a hierarchical structure of files and […]