Nuclei - Online Test
Q1.
has a half life of 5 days. The time taken for seven-eighth of a sample to decay is
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. A radioactive substance has a half life of four months. Three fourths of the substance will decay in
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. The half life of radon is 3.8 days. After how many days will only one twentieth of a radon sample be left over?
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. The percentage of the original quantity of a radioactive material left after five half lives is approximately
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. The half life of radium is 1600 years. The fraction of a sample of radium that would remain undecayed after 6400 years is
Answer : Option D
Explaination / Solution:
No Explaination.
Q6. Nuclear fusion is possible
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. When a hydrogen bomb explodes, which of the following is used?
Answer : Option A
Explaination / Solution:
No Explaination.
Q8. If M is the atomic mass, A is the mass number then (M – A)/A is called
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. Which of the following is the best nuclear fuel
Answer : Option B
Explaination / Solution:
No Explaination.
Q10. Of the following materials, the good moderator is
Answer : Option C
Explaination / Solution:
No Explaination.
