Entry Test MCQ :: Nuclear Physics
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1. |
In nucleus of uranium the number of neutrons will be |
A. |
92 |
B. |
235 |
C. |
143 |
D. |
different for different isotopes |
Answer: Option D
Explanation:
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2. |
During fusion of hydrogen into helium |
A. |
energy is absorbed |
B. |
energy is released |
C. |
mass is increased due to energy absorption |
D. |
mass is reduced due to energy released |
Answer: Option B
Explanation:
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3. |
One amu is equal to |
A. |
1.66 x 10-27kg |
B. |
166 x 10-15ng |
C. |
166 x 10-20?g |
D. |
all of above |
Answer: Option D
Explanation:
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4. |
According to which one of following law the density of atom is uniform? |
A. |
J.J.Thomson model |
B. |
Rutherfords model |
C. |
Bohrs model |
D. |
all of above laws contradict the statement |
Answer: Option A
Explanation:
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5. |
For chain reaction to build up the size of the radioactive target should be |
A. |
greater than the critical size |
B. |
less than the critical size |
C. |
equal to the critical size |
D. |
all of above can build up a change reaction |
Answer: Option A
Explanation:
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6. |
Antimatter consists of |
A. |
antiproton |
B. |
antineutron |
C. |
positron |
D. |
all of above |
Answer: Option D
Explanation:
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7. |
Neutron and proton are commonly known as |
Answer: Option A
Explanation:
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8. |
Half life of radium is 1590 years. In how many years shall the earth loss all its radium due to radioactive decay? |
A. |
1590x106 years |
B. |
1590x1012 years |
C. |
1590x1024 years |
D. |
never |
Answer: Option D
Explanation:
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9. |
Which one of the following radiation possesses maximum penetrating power? |
A. |
?-rays |
B. |
?-rays |
C. |
?-rays |
D. |
all have equal penetrating power |
Answer: Option C
Explanation:
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10. |
Electrons |
A. |
can exist inside the nucleus |
B. |
cannot exist inside the nucleus |
C. |
can exist both inside and outside the nucleus |
D. |
do not know |
Answer: Option B
Explanation:
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