Indicators are the chemical substances which are used to determine the end points of titrations. Methyl orange, phenolphthalein, starch solution, eric…
Hall Effect
When magnetic field is applied perpendicular to a current carrying conductor, then voltage is developed across the conductor in the direction perpendi…
Moving Coil Galvanometer
Moving coil galvanometer is a device which is used to detect and measure small electric currents present in an electric circuit. Principle It is based…
Derivation of Expression for Torque on a Rectangular Coil
Let us consider a rectangular coil PQRS of length ‘l’ and breadth ‘b’ suspended in uniform horizontal magnetic field ‘B&…
Benzene and Its Preparation
Benzene is a cyclic compound which consists of six carbon atoms where there is presence of alternate double bonds and single bonds. It is an aromatic …
Hybridization
The formation of certain molecules involving Carbon, Boron, Beryllium etc. cannot be explained satisfactorily on the basis of VSEPR (Valence Shell Ele…
The First Law of Thermodynamics
We know that heat is a form of energy which flows from a hotter body to a colder body. It is the energy produced due to the total kinetic energy produ…
Nepal Anti-Tuberculosis Association
There are different organizations which have been working in the field of health sector of Nepal from many years. Among such organizations, Nepal Anti…