| 1 |
Conduction of electricity through gases under reduced pressure is due to the transportation of. |
- A. positive charge
- B. Negative charge
- C. Both types of charges
- D. None of these
|
| 2 |
As the quantum number n increases, the energy difference between adjacent energy level. |
- A. Increase
- B. Remain same
- C. Decrease
- D. No correlation
|
| 3 |
Spectrum produced due to the transition of electron from M-Shall to L-Shell is. |
- A. Absorption
- B. Emission
- C. Continuous
- D. X rays
|
| 4 |
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
|
| 5 |
Bohr's model of atom is contradicted by |
- A. Planck quantum theory
- B. Quartization of energy of electrons
- C. Heisenberg's uncertainty principle
- D. Quartization of angular members
|
| 6 |
Orbitals having same energy are called |
- A. Hybird orbitals
- B. Valence orbitals
- C. Degenerate orbitals
- D. D-orbitals
|
| 7 |
The value of Rydberg constant is. |
- A. 1.6 x 10<sup>7</sup> m-1
- B. 1.9768 x 10<sup>7</sup> m-1
- C. 1.09678 x 10<sup>7</sup> m-1
- D. 1.7904 x 10<sup>7</sup> m-1
|
| 8 |
Which one of the following has the same number of electrons as an alpha particle. |
|
| 9 |
De Broglie equation treats electron to be. |
- A. A particle
- B. Wave
- C. Both particle and wave
- D. None of these
|
| 10 |
The nature of positive rays depends on |
- A. The nature of electrode.
- B. The nature of discharge tube
- C. The nature of residual gas
- D. All of the above
|