Purification Techniques_Pt. 1

What is the process of purification that involves the phase transition from a solid to a gas without entering an intermediate liquid phase?

• Extraction

• Crystallization

• Sublimation

• Chromatography

Which method of purification is suitable for separating a solid mixture based on the difference in solubility between the components?

• Extraction

• Crystallization

• Sublimation

• Chromatography

What is the name of the method used to transfer a solute from one phase to another in order to separate it from impurities?

• Extraction

• Crystallization

• Sublimation

• Chromatography

Which technique is commonly used to separate and analyze organic and inorganic compounds?

• Extraction

• Crystallization

• Sublimation

• Chromatography

What is the main purpose of carrying out an extraction?

• To isolate a compound from a mixture

• To dissolve a solid substance in a liquid

• To separate impurities from a solvent

• To create a homogenous mixture

Which type of chromatography uses a strip of paper as the stationary phase?

• Liquid Chromatography

• Gas Chromatography

• Thin-layer Chromatography

• Paper Chromatography

What is the purpose of preheating the filtration setup in the crystallization method?

• To prevent crystal formation

• To increase the solubility of the impurities

• To speed up the crystallization process

• To dissolve the crystals

Which technique is commonly used to purify a volatile solid contaminated with non-volatile impurities?

• Extraction

• Crystallization

• Sublimation

• Chromatography

What is the name of the phase that consists of water in liquid/liquid extraction?

• Organic phase

• Aqueous phase

• Solvent phase

• Impurity phase

Which technique is commonly used to analyze metal ions and organic compounds in solutions?

• Liquid Chromatography

• Gas Chromatography

• Thin-layer Chromatography

• Paper Chromatography