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NEET UG CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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The number of molecules present in 1 mL of gas or vapour at STP is:

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Correct option: C

Both (1) and (2)

Option C (Both (1) and (2)) is correct because the number of molecules present in 1 mL of gas or vapor at STP is called Loschmidt's number and is equal to approximately 2.687 × 10¹⁹ per mL.

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