| 1 |
The number of Isotopes of cesium are. |
|
| 2 |
Curie is unit of. |
- A. Conductivity
- B. Binding energy
- C. <div>Radioactivity</div>
- D. Resistivity
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| 3 |
Which of the following are not hadrons. |
- A. Muons
- B. Mesons
- C. Positrons
- D. Neutrons
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| 4 |
Nuclear fission chain reaction is controlled by using. |
- A. Cadmium rods
- B. Iron rods
- C. Platinum rods
- D. Steel rods
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| 5 |
The unit of radioactivity is: |
- A. Bequerel
- B. Henry
- C. Pascal
- D. Joule
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| 6 |
One joule of energy absorbed per kilogram of a body is |
- A. Roentgen
- B. Grey
- C. Rem
- D. Curie
|
| 7 |
The binding energy for_________ is maximum. |
- A. Copper
- B. Glass
- C. Iron
- D. Aluminum
|
| 8 |
The dead time of G.M tube is. |
- A. 10<sup>-1</sup> sec
- B. 10<sup>-6</sup>sec
- C. 10<sup>-4</sup>sec
- D. 10<sup>-8</sup>sec
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| 9 |
The radio active nuclide <sub>86</sub>Ra<sup>228</sup> decays by a series of emissions of three alpha particles and one beta particle. The nuclide X finally formed is: |
- A. <sub>64</sub>X<sup>220</sup>
- B. <sub>86</sub>X<sup>222</sup>
- C. <sub>84</sub>X<sup>216</sup>
- D. <sub>88</sub>X<sup>215</sup>
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| 10 |
The number of protons in any atom are always equal to the number of |
- A. Neutrons
- B. Electrons
- C. Positrons
- D. Mesoris
|