Hydrogen Atom and Bohr Theory MCQs for Competitive Exams

MCQS

Hydrogen Atom and Bohr Theory MCQs for Competitive Exams

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Topic Notes: Hydrogen Atom and Bohr Theory

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Hydrogen Atom and Bohr Theory MCQs in Physics are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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Why is the hydrogen atom incapable of emitting X-ray radiation?

its energy levels are too far apart

it is too small in size

it has a single electron

its energy levels are too close to each other

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Why is the hydrogen atom unable to emit X-ray radiation?

It has only one electron

It is highly electropositive

Its energy levels are very close to each other

It is very small in size

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What is the approximate ratio of the mass of a hydrogen atom to the mass of an electron?

1836

183.6

18.336

18360

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What is the approximate mass ratio of a proton to an electron?

1827

1876

1836

1789

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What is the resulting state of an atom after it loses an electron?

Negative ion

Neutron

None of the above

Positive ion

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Hydrogen Atom and Bohr Theory MCQs for Competitive Exams