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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Define :- Distillation

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प्रश्न

Define :- Distillation 

व्याख्या
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उत्तर

Distillation : Distillation is the method of getting a pure liquid from a solution by evaporating and then condensing the vapours.

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पाठ 3: Elements, Compounds and Mixtures - Exercise II

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 3 Elements, Compounds and Mixtures
Exercise II | Q 4.4

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 ?


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Components of crude petroleum can be separated by


Give a scientific reason.

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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?


What will happen if the upper outlet of the condenser is connected to the tap instead of the lower outlet?


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

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.


A mixture of benzene and chloroform is separated by ______.


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