Chapter 1 - Measurement and Problem Solving - Learning Path Questions and Exercises - Multiple Choice Questions - Page 26: 11

D It checking whether or not equations are dimensionally consistent. Dimensional analysis is the use of a set of units to establish the form of an equation, or more often, to check that the answer to a calculation is physically sensible.

Unit analysis of an equation can only tell whether the equation is dimensionally correct or not. Also, it cannot tell whether the equation is physically correct and the numerical value of the equation is correct.