Multiple choice

The particles of a mixture ‘x’ do not settle down on keeping undisturbed. Which of the following mixtures can represent ‘x’?

  1. Paint

  2. Muddy water

  3. Chalk powder in water

  4. Blood

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Blood is a colloidal solution, i.e. it is a heterogeneous mixture in which particle size is between 1–100 nm. Colloids are stable solutions as they do not settle down when kept undisturbed. Hence, solution ‘x’ can be blood.