instruction:
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:
Question: The reactivity of various carbonyl groups is determined by their relative stability. The order of reactivity towards nucleophiles is: 
 Options:  <0> Amides> Esters> Ketones> Aldehydes. <1> Aldehydes> Ketones> Esters> Amides. <2> Amides> Ketones> Aldehydes> Esters. <3> Aldehydes> Esters> Ketones> Amides. <4> Amides> Ketones> Esters> Aldehydes.
answer:
chemistry


question:
Question: With respect to the peptide bond, indicate which of the following statements is FALSE: 
 Options:  <0> It has partial character of double bond. <1> Form a small dipole. <2> Its formation involves the elimination of a molecule of water. <3> The peptide chain rotates freely through the peptide bond. <4> In an amide link.
answer:
chemistry


question:
Question: A 28-year-old violinist who is consulting for having presented panic attacks during his public performances in the last 3 months. The crises are accompanied by intense fear of being blocked and not being able to continue with the performance, something that would be humiliating for him. This fear has made him cancel his next performances. In the rest of his daily activities he does not experience this fear, nor does he experience it when he rehearses with his orchestra colleagues. What diagnosis would you consider most likely for this case? 
 Options:  <0> Simple phobia <1> Panic disorder <2> Social phobia of execution. <3> Generalized anxiety disorder. <4> Agoraphobia.
answer:

medicine