Question

Mass can neither be created nor be destroyed is the principle of_______

(a) Energy equation

(b) Momentum equation

(c) Continuity equation

(d) Bernoulli’s principle

I got this question in final exam.

Question is taken from Continuity Equation in division Aerodynamics – Fundamental Principles and Equations of Aerodynamics

Answer 1

Right answer is (c) Continuity equation

For explanation I would say: Continuity equation is based on the conservation of mass. According to this law, for any system, the amount of mass always remains constant unless and until the mass is added or removed from the system. This means that the quantity of matter does not change.