Detailed Instructions: 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.
See one example below:
Problem: Question: A distension is defined as:
Options: <0> Soft tissue injury. <1> Forced movement of abrupt production. <2> Injury by stretching a muscle. <3> Injury of the joint capsule. <4> Interruption in the continuity of a bone.
Solution: nursery
Explanation: Distension means Bloating and swelling in the belly area. It does not have much to do with chemistry, psychology, pharmacology, biology and medicine. Hence, the correct topic is nursery.

Problem: Question: If we try to dissolve ammonia in water we observe that:
Options: <0> It is completely soluble. <1> It is not very soluble. <2> It should be poorly soluble, but the solubility increases markedly by acid-base reaction between them, resulting in an acid solution. <3> It should be poorly soluble, but the solubility increases markedly by redox reaction between them, releasing hydrogen. <4> It is very soluble, favored by the formation of hydrogen bonds between the two compounds.
Solution:
chemistry