Explain system of units and state and some system of units.

Which system of units have you used?

What are the different system of units ?

Define unit and state the characteristics of a unit.

Explain with example, how is dimensional analysis used to convert the unit of a physical quantity from one system to another system of units.

Which of the following system of units is not based on units of mass, length and time alone

The physical quantity having the same unit in all the systems of unit is ________ .

Explain the human nervous system.

A calorie is a unit of heat and it equals 4.2 J, where 1 J = kg m^2 s^-2 .. A distant civilisation employs a system of units in which the units of mass, length and time are α kg, beta m and gamma s. Also J' is their unit of energy. What will be the magnitude of calorie in their units?

Explain unit of equilibrium constant .