Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.

The chemical reactions involve change in electron number or arrangement of electrons in an atom or atoms in a molecule. This leads to changes in chemical properties and hence a reaction takes place. These changes are dependent upon: Temperature, Pressure , other reaction conditions, the amount etc.

However nuclear reactions involves changes even at nuclear level (protons and neutrons). These changes are independent of reaction conditions.

Thus we can say that the following statement is true

Chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

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