Q.

Which of the following statements about the electron is incorrect?

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a

It is a negatively charged particle

b

The mass of electron is equal to the mass of neutron

c

It is a basic constituent of all atoms

d

It is a constituent of cathode rays

answer is B.

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Detailed Solution

The mass of electron is not equal to the mass of neutron. It is much less than that of neutrons.
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