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: Polarography is an analytical technique that refers to: 
 Options:  <0> The absorption of electromagnetic radiation. <1> The emission of electromagnetic radiation. <2> The voltametry with mercury electrode. <3> The use of palladium as a reference electrode. <4> To the potential of asymmetry.
chemistry

Question: Liquid chromatography using linked stationary phases can be divided into normal phase and reverse phase phases. In this context it can be said that: 
 Options:  <0> The main separation mechanism in reverse phase is the distribution, while adsorption also plays a very important role in the normal phase. <1> In normal phase chromatography, a large number of non-polar stationary phases can be used. <2> The main separation mechanism in normal phase is the distribution, while the adsorption plays a very important role in the reverse phase. <3> In reverse phase chromatography, the stationary phase is polar and the non-polar eluents. <4> In reverse phase chromatography, a large number of polar stationary phases can be used.
chemistry

Question: In the treatment of major depressive disorder, what are the advantages of selective serotonin reuptake inhibitors (SSRIs) compared to tricyclic antidepressants? 
 Options:  <0> They are more effective. <1> They have been used for a longer time, while tricyclic antidepressants are more modern and are not well known. <2> They have fewer side effects. <3> Its efficacy has been proven in controlled studies, while tricyclic antidepressants have not yet been evaluated in controlled studies. <4> They have no clear advantage.

psychology