- ADalton’s theory, Rutherford model.
- BRutherford’s model, Bohr’s model.
- CThomson’s model, Rutherford’s model.
- DRutherford’s model, Thomson’s model.
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A hydrogen atom in its ground state absorbs 10.2 eV of energy. The orbital angular momentum is increased by (Given Planck constant h = 6.6
J - sec)
|
(a) 1.05 |
(b) 3.16 |
(c) 2.11 |
(d) 4.22 |
For goldplating on a copper chain, the substance required in the form of solution is
|
(a) Copper sulphate |
(b) Copper chloride |
|
(c) Potassium cyanide |
(d) Potassium aurocyanide |
Whenever a hydrogen atom emits a photon in the Balmer series
|
(a) It need not emit any more photon |
|
(b) It may emit another photon in the Paschen series |
|
(c) It must emit another photon in the Lyman series |
|
(d) It may emit another photon in the Balmer series |
An X-ray tube is operated at 50 kV. The minimum wavelength produced is
| (a) 0.5 Å | (b) 0.75 Å | (c) 0.25 Å | (d) 1 Å |