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Standard XII

Chemistry

Thomson's Discovery of Electrons

Which of the ...

Question

Which of the following statements is correct regarding cathode rays?

They produce x-ray when they strike a metal

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They ionize the gas which they pass through it

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Cathode rays contain the smallest unit of negative charge

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All of the above

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Solution

The correct option is D All of the above
Cathode rays are emitted from the negative terminal of the elctrode and travel in straight line in absence of electric and magnetic fields. Cathode rays when struck on a metal emit x-rays and on passing through a gas they ionize the gaseous atoms and emit more electrons.

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Thomson's Discovery of Electrons

Standard XII Chemistry

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