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प्रश्न
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 :
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उत्तर
Fractional distillation : The process of distillation is used for separating the components of a homogeneous liquid-liquid mixture, like water and alcohol. This is based on the fact that alcohol boils at a lower temperature than water. The vapour of alcohol are collected and cooled while water is left behind in the original vessel. Thus, two liquids having different boiling points can be separated by distillation provided that difference in their boiling points must be 25 °C or more.
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संबंधित प्रश्न
Give a brief description of the principle of the following technique taking an example.
Distillation
Give one word answer
The liquid which evaporates and then condenses during the process of distillation
Explain the difference between Separation by distillation and by separating funnel.
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:
Alcohol can be separated from water by ______.
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.
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 ______.
