Nuclear Reactions (Q-value) — Practice Quiz

Question 1

In the reaction ²³⁵U(n, fission), the missing particle in ²³⁵U + n → ¹⁴⁴Ba + ⁸⁹Kr + ?n + Q is:

Accepted Answer

3 neutrons

Answer

1 neutron

Answer

2 neutrons

Answer

0 neutrons

Question 2

In the reaction ¹⁴N + α → X + p, X is:

Accepted Answer

¹⁷O

Answer

¹³C

Answer

¹⁵N

Answer

¹⁸F

Question 3

Q-value > 0 means:

Accepted Answer

Reaction exothermic (releases energy)

Answer

Reaction endothermic

Answer

Reaction impossible

Answer

Reaction reversible only

Question 4

Rutherford's 1919 transmutation of nitrogen was:

Accepted Answer

¹⁴N(α, p)¹⁷O

Answer

¹⁴N(n, α)¹¹B

Answer

¹⁴N(γ, n)¹³N

Answer

¹⁴N(p, α)¹¹C

Question 5

Conservation laws in nuclear reactions include:

Accepted Answer

Charge and mass number

Answer

Charge only

Answer

Total particle number

Answer

Spin only