Cathode rays are streams of
AUncharged neutrons
BPositively charged protons
CNegatively charged electrons
DCharged neutral atoms
Answer & Solution
Correct answer: C. Negatively charged electrons
1. J. J. Thomson observed cathode rays in a discharge tube.
2. They moved from cathode to anode.
3. They were deflected toward a positive plate.
4. So they are negatively charged particles called electrons.
_Source: Selina Concise Chemistry Class 8, Ch on Structure of Atom (Mistral OCR'd PDF), section on discovery of electron_
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