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.
By using a separating funnel

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Solution

The principle of separating funnels is that immiscible liquids separate out in layers depending on their densities.

It is a simple device used to separate the components of a liquid-liquid heterogeneous mixture.

Example : Mixture of kerosene oil and water. Water being denser gets separated out first.

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On what principle of the following methods of separation based give one example of a mixture for each of the methods mentioned in which they are used

A. Sublimation,and

B. Chromatography

(A) Identify the solute and solvent in the following solutions :
(i) aerated drinks
(ii) tincture of iodine
(iii) lemon water

(B) State the principle for each of the following methods of separation of mixtures.
(i) centrifugation method
(ii) separation using separating funnel

Q. Write answer to the following question in your own words.

(a) How are the components of mixtures separated by simple methods ?
(b) Which elements ( metals and non-metals), compounds and mixtures do we use in our day-to-day life?
(c) In everyday life, where and for what purpose do we use centrifugation?
(d) Where are the methods of separation by distillation and by separating funnel used ? Why ?
(e) Which precaution will you take while using the methods of distillation and separation by separating funnel ?

Q. Which of the following can be separated by using a separating funnel and which cannot be separated by using a separating funnel ?
(a) water and kerosene mixture
(b) water and acetone mixture
Give reasons for your answer.

Q. Which of the following can be separated by using a separating funnel and which cannot be separated by using a separating funnel?
(i) water and kerosene mixture
(ii) water and acetone mixture
(Give reasons for your answer.

Which method is better for recovering sugar from sugar solution: evaporation or crystallisation? Give reason for your answer.

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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.​ By using a separating funnel​

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.
By using a separating funnel