Extraction Techniques Quiz

Which of the following techniques is considered a static process involving occasional shaking?

• Soxhlet extraction

• Percolation

• Maceration

• Ultrasonic extraction

The principle behind Soxhlet extraction is:

• Fractional distillation

• Continuous extraction using boiling and condensation

• Cold maceration

• Sublimation

In percolation, what is the purpose of 'imbibition'?

• Remove air from marc

• Improve flow of menstruum

• Prevent swelling and blocking

• All of the above

Which solvent is typically used in reserved percolation?

• Water

• Acetone

• Alcohol

• Benzene

What is the role of activated porcelain pieces in Soxhlet extraction?

• Increase polarity

• Absorb impurities

• Prevent solvent bumping

• Reduce extraction time

Which of the following is a non-chromatographic technique?

• HPLC

• Sublimation

• Electrophoresis

• TLC

What is marc in the context of extraction?

• Extracted solvent

• Filter paper

• Solid residue after extraction

• A type of thimble

Mass transfer in extraction is driven by:

• Osmosis

• Surface tension

• Chemical potential difference

• Vapor pressure

In multiple maceration, why is menstruum divided into parts?

• Reduce cost

• Improve purity

• Maximize yield

• Prevent coagulation

Which of the following is a limitation of Soxhlet extraction?

• No heating required

• Cannot be used for thermolabile drugs

• Not suitable for powdered drug

• It does not require supervision