| 1 |
In the ground state of an atom, the electron is present |
- A. In the nucleus
- B. In the second shell
- C. Nearest to the nucleus
- D. Farthest from the nucleus
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| 2 |
Which gas has highest e/m ratio |
- A. Hydrogen
- B. Helium
- C. Nitrogen
- D. Oxygen
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| 3 |
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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| 4 |
The wave number of the light emitted by a certain source is 2 x 10<sup>6 </sup>m. the wavelength of this light is |
- A. 500 nm
- B. 500 m
- C. 200 nm
- D. 5 x 10<sup>7</sup>m
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| 5 |
The Rutherford experiment of using a stream of alpha particles on a piece of gold foil proved that. |
- A. The atom was a solid sphere
- B. The atom had electron
- C. The atom had neutrons
- D. The atom had a great empty space in it
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| 6 |
Lyman series lie in |
- A. Ultraviolet region
- B. Visible region
- C. Infrared region
- D. Radio waves region
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| 7 |
In discharge tube, properties of X-rays depend upon the nature of. |
- A. Residual gas
- B. Cathode plate
- C. Anode plate
- D. All of these
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| 8 |
How many electrons can be accommodated in sub shell for which n = 3, l = 1 |
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| 9 |
The line of the balmer series in the visible region of the spectrum, but the limiting line, in the series lies in |
- A. Visible region
- B. X-Ray region
- C. I.R region
- D. U.V. region
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| 10 |
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
|