Discovery of electron — task. Science CBSE, Class 9 New.

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Select the best answer:

1.In J. J. Thomson’s discharge tube experiment, cathode rays were produced under which conditions?

Low gas pressure and high voltage
High gas pressure and low voltage
Low temperature and low voltage
High temperature and high pressure

2. J.J. Thomson recieved the Noble prize for:

Development of periodic table
Conduction of electricity in gases
Discovery of the proton
Discovery of the neutron

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