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NIKITA PUBLICATION-ATOMS, MOLECULES AND NUCLEI-MCQs
- Inm the figure, energy levels of hydrogen atom have been shown along w...
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- The radius of the nucleus .(8)O^(16) is 3xx10^(-15)m. The density of t...
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- Which of the following is stable?
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- The radius of nucleus is:
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- Charge on an alpha-particle is
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- The radius of hydrogen atom, in its ground state, is of the order of
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- The ionization potential of a hydrogen atom is 13.6 eV. What will be t...
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- If a radioactive element is placed in an evacuated container, its rate...
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- The ratio of the speed of the electron in the first Bohr orbit of hydr...
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- unit of 'lambda' in radioactivity is
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- The gamma radiations are
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- What is the amount of energy released when 3 kg mass is annihilated?
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- The shortest wavelength for Lyman series is 912 Å. What will be the lo...
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- Balmer series lies in which spectrum?
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- Balmer series is obtained in
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- lambda(a)//lambda(beta) in Balmer series is
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- An electron in first orbit of hydrogen moves in circular orbit of radi...
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- The electron in the first orbit of hydrogen has velocity 2.18xx10^(6) ...
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- 1.5 kg mass is annihilated. Energy liberated in this process is
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- For electron moving in n^(th) orbit of the atom , the angular velocity...
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