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: Osmium oxide (VIII), OsO4:
Options: <0> It is a compound in a state of oxidation very common among transition metals. <1> It is the only binary compound of osmium with oxygen. <2> It has the structure of rhenium trioxide. <3> It is inert compared to alkaline hydroxides. <4> It is used as an oxidant in organic chemistry.

SOLUTION: chemistry

PROBLEM: Question: Beta-adrenergic receptor blocking drugs:
Options: <0> They cause hypotension in individuals with normal blood pressure. <1> They increase the atrio-ventricular conduction velocity. <2> They cause negative inotropism. <3> They provoke a positive chronotropic effect. <4> They increase the secretion of renin.

SOLUTION: pharmacology

PROBLEM: Question: In an evaluation the redox indicator In (ox) + ne- In (network) is used, whose normal potential is E0. The color change will occur:
Options: <0> To the potential of the equivalence point. <1> To the value of E0. <2> In the interval E0 0.059 / n. <3> In the interval E0 (ox) - E0 (network) if it is evaluated with a reducer. <4> At the potential of 0.059 / n.

SOLUTION:
chemistry