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Chemistry CBSE Live product
Class 9
Structure of the atom
PT2 Revision - Structure of the atom
1.
Discovery of canal rays
Question:
3
m.
Identify the correct answer:
1
.
The study of canal rays by Goldstein helped in the discovery of which subatomic particle?
Protons
Photons
Electrons
Neutrons
2
.
Which subatomic particle has no charge and mass of 1 a.m.u?
Positron
Proton
Electron
Neutron
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