How is TLV useful to determine pollution?

What is relative lowering of vapour pressure ? How is it useful to determine the molar mass of a solute ?

What is the relative lowering of vapour pressure ? How is it useful in determining the molecular weight of solute ?

Define and explain Raoult's law. How is it useful in determining the molecular weight of a non - volatile solute ?

Escherichia coli is used us an indicator organism to determine pollution of water with

Define Raoult's law for lowering of vapour pressure. How is the law useful in determining the molecular weight of a solvent when a known non - volatile solute is dissolved ?

Give an example of characteristics being used to determine how close two species are in evolutionary terms.

What instrument is used to determine the purity of milk ?

State the working principle of potentiometer explain with the help of circuit diagram how the potentiometer is used to determine the internal resistance of the given primary cell.