Question

Assertion (A): Solutions do not exhibit the Tyndall effect.

Reason (R): The particles in solutions are larger than 100 nm, so they cannot scatter light.

Choose the correct option:

Options

• Both A and R are true, and R is the correct explanation of A.

• Both A and R are true, but R is not the correct explanation of A.

• A is true, but R is false.

• A is false, but R is true.

Answer 1

A is true, but R is false.

Explanation:

Assertion (A) is correct because the particles in a true solution are extremely small and therefore cannot scatter light, so the Tyndall effect is not observed.

Reason (R) is incorrect because the particles in a solution are not larger than 100 nm; in fact, they are much smaller, generally less than 1 nm in size. Due to this extremely small size, they are unable to scatter light.