UPSC NDA I 2010 General Ability Paper

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Question : 105 of 150

Marks: +1, -0

Which one of the following statements is correct?

Only electrons reside inside the nucleus of an atom
Both electrons and protons reside inside the nucleus of an atom
Only neutrons reside inside the nucleus of an atom
Both protons and neutrons can reside inside the nucleus of an atom.

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