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The rebounding particles showed that positive charge and mass sit in a:
ASmall volume
BSizeable volume
CSpreading volume
DSlanting volume
Answer & Solution
Correct answer: A. Small volume
1. A few particles turned back through 180 degrees.
2. Something dense had to be in the way.
3. All the mass sits in a very small volume.
_Source: NCERT Class 9 Science, Ch 4 'Structure of the Atom'_
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