In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

[Q]: Question: Liquid chromatography using linked stationary phases can be divided into normal phase and reverse phase phases. In this context it can be said that: 
 Options:  <1> The main separation mechanism in reverse phase is the distribution, while adsorption also plays a very important role in the normal phase. <2> In normal phase chromatography, a large number of non-polar stationary phases can be used. <3> The main separation mechanism in normal phase is the distribution, while the adsorption plays a very important role in the reverse phase. <4> In reverse phase chromatography, the stationary phase is polar and the non-polar eluents. <5> In reverse phase chromatography, a large number of polar stationary phases can be used.
[A]: 1


[Q]: Question: The reaction of an alkene with metachloroperbenzoic acid causes a cyclic ether which is called: 
 Options:  <1> Furano <2> Dioxane <3> Epoxide <4> Azirano <5> Lactone
[A]: 3


[Q]: Question: The alkaline error in the glass electrode is due to 
 Options:  <1> The membrane responds to other anions besides the hydroxyl ion. <2> The membrane responds to other anions besides the hydrogen ion. <3> The membrane responds to other cations in addition to the hydrogen ion. <4> That the pH is higher than it really is. <5> This error is not described for the glass electrode.
[A]:
3