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: In HPLC and under ideal conditions, the chromatographic peaks should have the shape of Gaussian peaks with perfect symmetry, although in reality, the peaks are not perfectly symmetrical and can present fronts and tails. The asymmetry factor: 
 Options:  <0> It is used to measure the relative retention of the two components of a sample so that in perfectly symmetrical compounds it is 0. <1> It is used to measure the degree of symmetry of a peak and is defined at the peak width corresponding to 10% of the peak height. <2> It is a parameter that is calculated by measuring the width at the half-height of the chromatographic peak. <3> It relates to each other two successive chromatographic peaks, so that an asymmetry factor 1 indicates a total resolution of them. <4> It is a parameter related to the symmetry of the peaks, defined at a height equal to 10% of the width thereof.
answer:
chemistry


question:
Question: The aldol condensation gives rise to: 
 Options:  <0> Α, β-unsaturated amides. <1> Saturated amides. <2> Α, β-unsaturated carbonyl compounds. <3> Chiral compounds. <4> Β, γ-unsaturated carbonyl compounds.
answer:
chemistry


question:
Question: The equation of speed of a chemical reaction: 
 Options:  <0> It must be determined from kinetic measurements and can not be deduced directly from the stoichiometry of the reaction. <1> Allows the units of s-1 (s = second) to be assigned to the velocity constant. <2> It depends on the total reaction order that, in turn, is obtained from the stoichiometric coefficients of the products. <3> Report in detail about the reaction mechanism. <4> It depends on the experimental conditions of the process.
answer:

chemistry