TASK DEFINITION: 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.
PROBLEM: Question: A cyclic voltammetry: 
 Options:  <0> It is based on a stationary broadcasting regime. <1> It uses macroelectrodes as working electrodes. <2> He never needs a potentiostatic system. <3> It is always done in a non-agitated solution. <4> It uses a square wave potential format as an excitation system.

SOLUTION: chemistry

PROBLEM: Question: By reaction of carbonyls with primary and secondary amine, the following are obtained: 
 Options:  <0> Iminas and oximes. <1> Iminas and enaminas. <2> Oxazones and hydrazones. <3> Semicarbazones and nitrones. <4> None of the above.

SOLUTION: chemistry

PROBLEM: Question: Indicate the amino acid that, under physiological conditions, has an uncharged side chain: 
 Options:  <0> Arginine <1> Aspartic acid. <2> Glutamic acid. <3> Lysine <4> Threonine

SOLUTION:
chemistry