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Which of the following statements is cor...

Which of the following statements is correct

A

Observations like Photoelectric effect and Blackbody radiations could not be explained by particle nature of electromagnetic radiations

B

UV rays and IR rays have the same frequency

C

Bohr's model is not valid for `Li^+` ion

D

None of these

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RESONANCE-DPP-QUESTIONS
  1. The work function for a metal is 4eV. To emit a photoelectron of zero ...

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  2. The energies E1 and E2 of two radiations are 25 eV and 50 e V respecti...

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  3. Which of the following statements is correct

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  4. The energy required to remove an electron from metal X is E = 3.31 xx ...

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  5. For which of the following species, Bohr theory doesn't apply

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  6. If radius of third stationary orbit (in Bohr's atom) is R. Then radius...

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  7. The radius of the first orbit of H-atom is r. then the radius of the f...

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  8. The number of Br^- Ions in 2.1 g CaBr2 is [NA=6xx10^23]

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  9. If the mass of 10^22 molecules of a hydrocarbon is about 1.2 g, then t...

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  10. The value of R will be maximum for which of the following gases :

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  11. Volume occupied by an ideal gas at one atmospheric pressure and 0^@C i...

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  12. Select the correct option

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  13. 11.2 litre of a gas at STP weighs 14 g The gas could not be

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  14. x g Urea (NH2CONH2) contains y total number of atoms 4x g Acetic acid ...

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  15. The triad of nuclei that is isotonic is

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  16. "A^(+2)" is isoelectronic with N2O and has (Z+1) neutron (Z is atomic ...

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  17. The de-Broglie wavelength of a particle with mass 1 g and velocity 100...

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  18. If the kinetic energy of a particle is doubled, De-Broglie wavelength ...

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  19. Momentum of a photon of wavelength lambda is :

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  20. When an electron drops from a higher energy level to a low energy leve...

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