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Chemistry CBSE Live product
Class 9 (2025-26)
Atoms and molecules
PTA Revision
5.
Atomic mass
Question:
1
m.
Choose the correct answer:
1 amu is equal to the mass of
\(1\ g\) of \(H_2\)
\(1/14\) th of \(O-16\) atom
\(1/12\) th of \(C-12\) atom
\(1.66\) × \(10^2{^3}\) kg
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