Multiple choice

Which one of the following mixtures is homogeneous?

  1. Starch and sugar

  2. Methanol and water

  3. Graphite and charcoal

  4. Calcium carbonate and calcium bicarbonate
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Methanol and water form a homogeneous mixture because they are completely miscible in all proportions, forming a single-phase solution. The other options are heterogeneous mixtures: starch and sugar (different particles), graphite and charcoal (distinct forms of carbon), calcium carbonate and calcium bicarbonate (separate solid compounds). Homogeneity means uniform composition throughout.

Keep practicing — related questions