1 |
X- rays have same nature as |
- A. Alpha rays
- B. Beta rays
- C. Gamma rays
- D. Cathods rays
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2 |
Bohr's model of atom is contradicted b y. |
- A. Planck quantum theory
- B. Quantization of energy of electrons
- C. Heisenberg's uncertainty principle
- D. Quantization of angular momentum
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3 |
Maximum number of electrons in f-subshell is. |
|
4 |
Quantum number values for 3p orbitals are. |
- A. n = 0, l = 3
- B. n = 3 , l = 1
- C. n = 2, l = 1
- D. n = 2 , l = 3
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5 |
When atoms are subjected to strong electric field, splitting of spectral lines is called. |
- A. Zeeman effect
- B. stark effect
- C. Photoelectric effect
- D. Compton effect
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6 |
Which of the following orbitals is not possible. |
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7 |
Transition from various energy levels to the lowest energy level gives. |
- A. Lyman series
- B. Balmer series
- C. Panchen sereis
- D. Pfund series
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8 |
The mass of alpha particle is equal to. |
- A. Four times the mass of one proton
- B. That of one hydrogen atom
- C. That of one electron
- D. That of one proton
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9 |
Which is not decay product of free neutron |
- A. Proton
- B. Electron
- C. Neutron
- D. Antineutrino
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10 |
The wave number of the light emitted by a certain source is 2 x 10<sup>6</sup>m<sup>-1</sup>The wave length of this light is. |
- A. 500 nm
- B. 500 m
- C. 200 nm
- D. 600 m
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