1. Quantites such as mass, weight, distance, temperature, volume are called  DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue quantities.

2. A  DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue and a  DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue are used to express the magnitude of a physical quantity.

3. Physical quantities are classified into  DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue types, namely,
(i)  DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue quantities and (ii)  DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue quantities.

4. A set of physical quantities which cannot be expressed in terms of any other quantities are known as “ DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue”.

5. Their corresponding units are called “ DerivedFundamentalFundamental quantitiesFundamental unitsphysicaltwounitvalue”.