Home Class 11

Class 11

Potential Energy of a spring

Energy possessed by the spring by virtue of compression or expansion against elastic force in the spring is known as elastic potential energy or...
11th Chemistry NCERT notes

Orbit Overlap Concept

Orbit Overlap Concept According to orbital overlap concept, the formation of a covalent bond between two atoms results by pairing of electrons present in the...
11th Chemistry NCERT notes

Enthalpies for Different types of Reactions

Standard enthalpy of combustion (symbol: ∆c H⊖) It is the Enthalpy change taking place when one mole of a compound undergoes complete combustion in the...
Hydraulic Machines

Hydraulic Machines

The external pressure is applied on any part of a fluid contained in a vessel, it is transmitted undiminished and equally in all directions....
Stress-Strain relationship curve

Stress-Strain relationship curve

Stress strain curve is used to understand the tensile strength of a given material. The given figure shows a stress-strain curve of a given...
Heat and Temperature

Heat And Temperature

The branch dealing with measurement of temperature is called thermometry and the devices used to measure temperature is called thermometers. Heat Heat is a form of...
11th Chemistry NCERT notes

Common Ion Effect & Hydrolysis of Salts

Common Ion Effect If in an aqueous solution of a weak electrolyte, a strong electrolyte is added having an ion common with the weak electrolyte,...
11th Chemistry NCERT notes

Heavy Water (D2O)

It is used in the preparation of other deuterium compounds. Uses of D2O: It is used as moderator in nuclear reactors. ...

Resolution of a vector in a plane and Unit Vector

Resolution of a Vector in a Plane: Let a and b be any two nonzero vectors in a plane with different directions and let A...
Anomalous expansion of water

Anomalous expansion of water

It contracts on heating between 0 °C and 4 °C. The volume of a given amount of water decreases as it is cooled from...