Multiple choice

The nuclear reaction - 1H2 + 1H2

  1. Fission reaction

  2. Fusion reaction

  3. Chain reaction

  4. Thermal reaction

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The reaction H² + H² involves two deuterium nuclei fusing together, which is a nuclear fusion reaction. Fission splits a heavy nucleus, chain reaction is sustained fission, and thermal reaction is vague and non-specific.