Entry Test MCQ :: Nuclear Physics
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| 31. |
The unit of radioactivity curie is equal to |
| A. |
3.74 x 109 disintegration per sec |
B. |
3.70 x 1010 disintegration per sec |
| C. |
3.55 x 1010 disintegration per sec |
D. |
3.60 x 1010 disintegration per sec |
Answer: Option B
Explanation:
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| 32. |
During fission process a large amount of |
| A. |
heat energy is released |
B. |
nuclear energy is released |
| C. |
chemical energy is released |
D. |
light energy is released |
Answer: Option B
Explanation:
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| 33. |
In liquid metal fast breeder reactor the type of uranium used is |
Answer: Option B
Explanation:
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| 34. |
Radioactive materials can be identified by measuring their |
| A. |
hardness |
B. |
density |
| C. |
mass |
D. |
half life |
Answer: Option D
Explanation:
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| 35. |
If one or more of the neutrons emitted during fission cab be used to build up further fission then the reaction is self sustained and is known as |
| A. |
fission reaction |
B. |
fusion reaction |
| C. |
chain reaction |
D. |
chemical reaction |
Answer: Option C
Explanation:
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| 36. |
Pair production takes place in the vicinity of a heavy nucleus so that |
| A. |
net energy is conserved |
B. |
net charge is conserved |
| C. |
net momentum is conserved |
D. |
all of the above |
Answer: Option D
Explanation:
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| 37. |
During an encounter with an atom ?-particle knocks out |
| A. |
protons |
B. |
electrons |
| C. |
neutrons |
D. |
nothing |
Answer: Option B
Explanation:
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| 38. |
The path of ?-particle is |
| A. |
rectilinear |
B. |
curved |
| C. |
zig-zag or erratic |
D. |
elliptical |
Answer: Option C
Explanation:
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| 39. |
Which of the following radiations are suitable for the treatment of an infection in the interior of the body ? |
Answer: Option C
Explanation:
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| 40. |
Various types of cancer are treated by |
| A. |
cobalt-60 |
B. |
strontium-90 |
| C. |
carbon-14 |
D. |
nickel-63 |
Answer: Option A
Explanation:
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