Question

Assertion: A solution can scatter a beam of light passing through it. Reason: The particles of solution are smaller than 1 nm in diameter. * Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A). Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). Assertion (A) is true but reason (R) is false. Assertion (A) is false but reason (R) is true.​

Answer 1

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Answer 2

Assertion: A solution can scatter a beam of light passing through it. Reason: The particles of solution are smaller than 1 nm in diameter

In this Assertion (A) is false but reason (R) is true.​

• The Tyndall impact is the gold standard for determining the difference between a true and a colloidal solution. It is based on the idea that light beams scatter owing to the existence of large colloidal particles in the solution that separates the light.
• However, in a realistic solution, the molecules really aren't big enough to disperse the light particles, which is why the Tyndall effect is not observed. Colloid particles are bigger than water and hence exhibit the Tyndall effect.
• When a light goes through the genuine solution, the direction of light is invisible because the particles in the proper solution are small than 1 nm and hence cannot scatter the light, preventing the Tyndall effect from occurring.