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प्रश्न
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.
पर्याय
Both A and R are correct and R is the correct explanation of A.
Both A and R are correct but R is not the correct explanation of A.
Both A and R are not correct.
A is not correct but R is correct.
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उत्तर
Both A and R are correct and R is the correct explanation of A.
Explanation:
Since the liquids are having sufficient difference in their boiling points. Liquids having different boiling points vaporize at different temperatures. The vapours are cooled, and the liquids so formed are collected separately.
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संबंधित प्रश्न
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 ?
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
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.
Which of the following methods can be used to separate two compounds with different solubilities in the same solvent?
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 is the difference between simple distillation and fractional distillation?
Define Distillation
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 |
Explain the factors, which will affect the rate of evaporation, taking examples from our daily life experiences.
