Which of the following are true statements?

Question

Which of the following are true statements ?

a) Water is a homogeneous mixture
b) Neon is an element
c) Mixing sand in water and allowing it to stand undisturbed for an
extended period of time will lead to a homogeneous mixture.
d) Magnesium chloride MgCl2 is a heterogeneous mixture

Answer 1

b is definitely true, and a is also true if you are talking about the water that we all come across each day, containing dissolved solutes.