Question

Which of the following is a point property?

(a) Pressure

(b) Mass

(c) Density

(d) Pressure and density

I had been asked this question in a job interview.

My question is taken from Finite Control Volume Approach in portion Aerodynamics – Fundamental Principles and Equations of Aerodynamics

Answer 1

Correct answer is (d) Pressure and density

The best I can explain: Both pressure and density vary from one point to another. Pressure and density vary with the altitude and are directly proportional to each other. Pressure and density does depend on a path as they change from one point to other. If one parameter is changed, it affects pressure and density.