Model Paper 7 — Chemistry STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceChemistryModel Paper 71 Mark
MCQ
Cathode rays or cathode ray particles are:
A
neutrons
B
protons
✓
electrons
D
muons
✓
Answer
Correct option: C.
electrons
(c) electrons Explanation: Cathode rays - In 1897, British physicist J. J. Thomson showed the rays were composed of a previously unknown negatively charged particle, which was later named the electron.
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