JEE Mains Chemistry Past PapershardMCQ SINGLE

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason RJEE Mains Chemistry Past Papers Chemistry Question

Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The diameter of colloidal particles in solution should not be much smaller than wavelength of light to show Tyndall effect. Reason R: The light scatters in all directions when the size of particles is large enough. In the light of the above statements, choose the correct answer from the options given below: (A) A is false but R is true (B) Both A and R are correct and R is the correct explanation of A (C) Both A and R are correct but R is NOT the correct explanation of A (D) A is true but R is false

Answer: B

💡 Solution & Explanation

The diameter of colloidal particles in solution should not be much smaller than wavelength of light to show Tyndall effect. Because the light scatters in all directions when the size of particles is large enough.

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