Advertisements
Advertisements
प्रश्न
Write an answer to the following question in your own words.
Where are the methods of separation by distillation and by separating funnel used? Why?
उत्तर
Distillation and separating funnels are used in the separation of liquid mixtures. Distillation is a method that is used for separating two miscible liquids. It is based on the difference in the boiling points of two liquids. Distillation can either be simple or fractional. Simple distillation can be used for liquids that have a huge difference in their boiling points, whereas fractional distillation is used in the case of liquids that have close boiling points. Distillation can be used in the production of gasoline, distilled water, xylene, alcohol, paraffin, and kerosene, apart from separating mixtures.
Separation using separating funnels is used in the case of immiscible liquids. It is based on the difference in the density of the two liquids. It can be used in the separation of oil from water, etc, two different types of immiscible oils, etc.
संबंधित प्रश्न
How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than 25°C), which are miscible with each other?
What is the difference between distillation, distillation under reduced pressure and steam distillation ?
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Fractional distillation :
Give one word answer
The liquid which evaporates and then condenses during the process of distillation
Write an answer to the following question in your own words.
Which precaution will you take while using the methods of distillation and separation by separating funnel?
Define Distillation
Match the type of mixture of compounds in Column I with the technique of separation/purification given in Column II.
| Column I | Column II |
| (i) Two solids which have different solubilities in a solvent and which do not undergo reaction when dissolved in it. | (a) Steam distillation |
| (ii) Liquid that decomposes at its boiling point | (b) Fractional distillation |
| (iii) Steam volatile liquid | (c) Simple distillation |
| (iv) Two liquids which have boiling points close to each other | (d) Distillation under reduced pressure |
| (v) Two liquids with large difference in boiling points. | (e) Crystallisation |
Draw a diagram of bubble plate type fractionating column. When do we require such type of a column for separating two liquids. Explain the principle involved in the separation of components of a mixture of liquids by using fractionating column. What industrial applications does this process have?
Explain the factors, which will affect the rate of evaporation, taking examples from our daily life experiences.
A mixture of benzene and chloroform is separated by ______.
