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Model Paper 7 — Chemistry STD 11 Science — Question

Rajasthan 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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