Which of the following will show Tyndall effect?

The correct options are Milk and Starch solution.

The Tyndall effect is shown by a colloidal solution. Salt solution and copper sulphate solutions are true solutions. Here milk and starch solutions are colloids; therefore, milk and the starch solutions will show the Tyndall effect. Hence, Options "Milk" and "Starch solution" are the correct answers.