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JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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The mass of 2.5 g.atom of oxygen is

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Correct option: A

40 g

Option A (40 g) is correct because 1 g.atom is equal to the gram atomic weight, and for oxygen, it's 16 g/g.atom. Therefore, 2.5 g.atom is 2.5 * 16 = 40 g.

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