Chemistry · Purification: Crystallization, sublimation, distillation, differential extraction and chromatography principles and their applications
The fragrance of the flower is due to the presence of some steam volatile organi
The fragrance of the flower is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in the vapour phase. A suitable method for the extraction of these oil from the flower is:
- A. distillation
- B. crystallisation
- C. distillation with reduced pressure
- D. steam distillation
Step-by-step solution
Essential oils are steam volatile and immiscible with water at room temperature but form a mixture with water vapour. Steam distillation allows the essential oils to vaporize at lower temperatures without decomposition, and then the oil and water are condensed and separated.
Related MCQs
- The powdered ore is agitated with water or washed with running stream of water The heavy ore particles and lighter impurities are separated.…
- Treatment of waste water involves physical, chemical, and biological processes, which remove matter that contaminates waste water.…
- Liquid ethanol can be separated from a mixture of ethanol and water by:…
- The process of separation of an organic compound from its aqueous solution by shaking with a suitable solvent is termed solvent extraction o…
- Method used to separate Petrol from crude oil is:…