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प्रश्न
Choose the correct option.
Which of the following techniques is used for the separation of glycerol from soap in the soap industry?
पर्याय
Distillation under reduced pressure
Fractional distillation
Filtration
Crystallization
उत्तर
Distillation under reduced pressure
APPEARS IN
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?
Give a brief description of the principle of the following technique taking an example.
Distillation
What is the difference between distillation, distillation under reduced pressure and steam distillation ?
Define :- Distillation
How is distillation more advantageous than evaporation?
Give one word answer
The liquid which evaporates and then condenses during the process of distillation
Give a scientific reason.
A wet cloth is wrapped around a water storage container in summer.
Explain the difference between Separation by distillation and by separating funnel.
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?
Pure water from impure water
- Give the principle involved in the separation of the mixture
- Give the technique of separation of the mixture.
Choose the correct option.
A mixture of acetone and benzene can be separated by the following method:
Why is a condenser used in distillation process?
What will happen if the upper outlet of the condenser is connected to the tap instead of the lower outlet?
Alcohol can be separated from water by ______.
Which of the tubes in Fig. 2.1 (a) and (b) will be more effective as a condenser in the distillation apparatus?
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 |
Assertion (A): Simple distillation can help in separating a mixture of propan-1-ol (boiling point 97°C) and propanone (boiling point 56°C).
Reason (R): Liquids with a difference of more than 20°C in their boiling points can be separated by simple distillation.
Two liquids (A) and (B) can be separated by the method of fractional distillation. The boiling point of liquid (A) is less than boiling point of liquid (B). Which of the liquids do you expect to come out first in the distillate? Explain.
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 ______.
