Question

which of the following contains a single phase?
i. substance
ii. homogeneous mixture
iii. heterogeneous mixture
a l and ii
b i only (
c ii only
d i and iii

Explanation:

• A substance has a uniform composition and exists in a single phase.
• A homogeneous mixture has a uniform composition throughout and is also in a single phase.
• A heterogeneous mixture has different phases and non - uniform composition.

Answer:

A. I and II