Which of the following is not able to scatter the beam of light passing through them?

True solution

The correct answer is option 1. True solution.

The particles of a solution are smaller than 1 nm (10^-9 metre) in diameter. So, they cannot be seen by naked eyes.

Because of very small particle size, they do not scatter a beam of light passing through the solution. So, the path of light is not visible in a solution.