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: The lithium aluminum hydride reacts with the carboxylic acids to give:
Options: <0> Esters. <1> Ketones <2> Tertiary alcohols. <3> Secondary alcohols <4> Primary alcohols.

SOLUTION: chemistry

PROBLEM: Question: When administering oxygen therapy to a patient admitted to the emergency room due to exacerbated COPD, you should take into account that:
Options: <0> The flow of oxygen must be high, since respiratory failure is accompanied by hypoxia. <1> The concentration of oxygen is conditioned by the patient's clinical situation. <2> The concentration of oxygen must be equal to the atmospheric concentration, since the patient presents hypercapnia. <3> The flow should be low, since hypoxia is the only stimulus to breathe. <4> The flow must be adjusted to achieve a PO2 greater than 90 mmHg.

SOLUTION: nursery

PROBLEM: Question: In a clinical study to evaluate the efficacy of a new medication in the treatment of migraine crisis (point out the CORRECT):
Options: <0> Strict inclusion criteria increase the external validity of the study. <1> Strict exclusion criteria reduce the internal validity of the study. <2> Control with a placebo arm increases the external validity of the study. <3> Masking reduces the internal validity of the study. <4> Randomization increases the internal validity of the study.

SOLUTION:
medicine