1. What is caffeine?, Protein, Alkaloid, Caffeine belongs to which chemical group, Steroids, Xanthines, What does the semi-synthetic method mean?, Chemical modification of a natural substance, Only physical purification, Which substances are used as raw materials in semi-synthetic caffeine production?, Benzene and phenol, ) Theobromine and theophylline, What type of reaction is used to obtain caffeine?, Methylation, Reduction, Which reagent is used for methylation?, Water, ) Sodium chloride, Oxygen, Methyl iodide, From which compound can caffeine be obtained?, Starch, Theobromine, Cellulose, Glycerin, What is the main advantage of semi-synthetic production?, Low purity, Expensive process, Only laboratory use, High yield and quality, After the reaction, caffeine is purified by, Burning, Filtration and recrystallization, Where is caffeine mostly used?, Construction industry, Pharmacy and beverages.

Tauler de classificació

Estil visual

Opcions

Canvia de fonament

)
Restaurar desada automàtica: ?