Read the Assertion and Reason below and choose the correct option. — States of Matter and Gaseous State Chemistry Question

💡 Solution & Explanation

Statement I is correct because Graham's law assumes no intermolecular collisions during effusion, which is best approximated at very low pressures where the mean free path is large. Statement II is incorrect because Graham's law can be applied to real gases under appropriate low-pressure conditions; it is not strictly limited exclusively to hypothetical ideal gases. Therefore, correct answer is C.