Quiz on Separation and Purification Techniques - I

What is the primary principle behind fractional distillation?

• Separation based on density

• Separation based on boiling points

• Separation based on molecular weight

• Separation based on solubility

Which of the following techniques is used to purify solid organic compounds?

• Chromatography

• Electrophoresis

• Recrystallization

• Filtration

What is the purpose of using desiccants in purification processes?

• To increase boiling point

• To absorb moisture

• To lower melting point

• To enhance solubility

In azeotropic distillation, what is the main challenge that needs to be addressed?

• Removal of impurities from gases

• Separation of solids from liquids

• Formation of a constant boiling mixture

• Enhancing the solubility of compounds

Which extraction technique involves the use of a continuous flow of solvent?

• Batch extraction

• Solid extraction

• Continuous extraction

• Counter current extraction

What is a key factor in determining the efficiency of solvent extraction?

• Temperature of the solvent

• Volume of the solvent

• Polarity of the solvent

• Color of the solvent

Which of the following is NOT a type of solvent extraction technique?

• Counter current extraction

• Static extraction

• Continuous extraction

• Batch extraction

What is the main advantage of using steam distillation?

• It requires high pressure

• It is less expensive

• It can separate heat-sensitive compounds

• It is faster than other methods

Which of the following criteria is essential for testing the purity of a compound?

• Solubility in water

• Density measurement

• Color change

• Melting point determination

What is the role of sublimation in the purification of organic compounds?

• To enhance crystallization

• To convert solids directly to gas

• To separate based on boiling points

• To dissolve impurities