Extraction Quiz

What is extraction defined as?

• The heating of solid materials

• The addition of soluble material to a residue

• The removal of soluble material from an insoluble residue

• The mixing of two immiscible liquids

Which factor affects the extraction rate?

• Shape of the container

• Particle size

• Type of solid material

• Color of the solvent

What is a key feature of the Bollman extractor?

• It requires high pressure

• It is designed for solid-solid extraction

• It uses a countercurrent flow

• It operates in a batch process

What does the Nernst distribution law describe?

• The distribution of solutes between immiscible liquids

• The temperature effects on extraction

• The pressure required for extraction

• The viscosity of solvents

What is the advantage of using baffle-plate columns?

• They require less solvent

• They are the most cost-effective option

• They enhance contact and separation of liquid phases

• They are suitable for all types of liquids

What is the main disadvantage of perforated plate columns?

• They are inefficient

• They require high maintenance

• They are not suitable for suspension

• They are too expensive

What is the role of the condenser in a Soxhlet extractor?

• To separate solid from liquid

• To cool and return solvent vapor

• To mix the solvent with the solid

• To heat the solvent

What is the primary function of the packing material in packed columns?

• To increase the flow rate

• To reduce the temperature

• To enhance surface area for contact

• To filter out impurities

In liquid-liquid extraction, what is the feed phase?

• The waste material after extraction

• The liquid mixture containing compounds to be separated

• The solvent used for extraction

• The solid material being processed

What is the partition coefficient (K) in the Nernst distribution law?

• The pressure applied during extraction

• The volume of solvent used

• The temperature at which extraction occurs

• The ratio of solute concentrations in two phases