Question

which type of reaction occurs in the core of a nuclear reactor in a nuclear power plant?
o hcl+naoh→h₂o+nacl
o ( ce{_{92}^{235}u + _{0}^{1}n -> _{38}^{90}sr + _{54}^{143}xe + 3_{0}^{1}n} )
o ( ce{_{38}^{90}sr + _{54}^{143}xe + 3_{0}^{1}n -> _{92}^{235}u + _{0}^{1}n} )
o ( ce{c_{10}h_8 + 12o_2 -> 10co_2 + 4h_2o} )

Explanation:

1. Analyze the first option: $\ce{HCl + NaOH -> H_{2}O + NaCl}$ is an acid - base neutralization reaction (a type of chemical reaction, not nuclear).
2. Analyze the second option: $\ce{_{92}^{235}U + _{0}^{1}n -> _{38}^{90}Sr + _{54}^{143}Xe + 3_{0}^{1}n}$ represents a nuclear fission reaction. In nuclear power plants, the core uses nuclear fission of uranium - 235. A large nucleus (uranium - 235) is split into smaller nuclei (strontium - 90 and xenon - 143) along with the release of neutrons.
3. Analyze the third option: $\ce{_{38}^{90}Sr + _{54}^{143}Xe + 3_{0}^{1}n -> _{92}^{235}U + _{0}^{1}n}$ is a nuclear fusion - like reverse reaction (not the reaction in nuclear power plant reactors, as fusion is not yet used for commercial power generation in the same way as fission, and this equation also does not represent typical fusion).
4. Analyze the fourth option: $\ce{C_{10}H_{8}+12O_{2}->10CO_{2} + 4H_{2}O}$ is a combustion reaction (a chemical reaction, not nuclear).

Answer:

B. $\ce{_{92}^{235}U + _{0}^{1}n -> _{38}^{90}Sr + _{54}^{143}Xe + 3_{0}^{1}n}$