What is the relative atomic mass unit based on as standard reference today?

Type: MCQ • Marks: 1

A. Oxygen-16 isotope

B. Carbon-12 isotope

C. Nitrogen-14 isotope

D. Hydrogen-1 atom

Explanation

Carbon-12 (¹²C) is universally adopted as the standard reference with an exact mass of 12 u.

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Class 9th Science (MCQ)

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