You will be given a definition of a task first, then some input of the task.
In this task, you are given a question and answer options for that question. Using this information, you have to classify each text into different topics: medicine, nursery, psychology, chemistry, pharmacology, biology.

Question: In the kinetic methods of analysis:
Options: <0> Slow reactions can be used. <1> It is necessary that the reaction be completed in order to obtain the data of the equilibrium concentrations. <2> Low concentrations of a catalyst can be determined as long as the speed of the reaction does not depend on the concentration thereof. <3> It is not necessary to rigorously control the experimental conditions. <4> Mixtures of analytes can be determined as long as they all react with the same reagent at the same reaction rate.
Output:
chemistry