Separation of Mixture of two Immiscible Liquids

Q. Question 3
What type of mixtures are separated by the technique of crystallisation?

Q.

How will you separate a mixture of cooking oil (groundnut oil) and water?

Q.

How will you separate water from mustard oil?

Q.

A mixture of two or more miscible liquids, for which the difference in the boiling points is less than $25\mathrm{K}$ can be separated by the process called______.

Q.

What differences in the properties of oil and water enable their separation by a separating funnel ?

Q.

What is principle of separating immiscible liquids by separating funnel?

Q. Kerosene and water can be separated due to the difference in ________.

1. volumes
2. weights
3. densities
4. masses

Q.

Which will form the upper layer when mustard oil and water are mixed?

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.

Question 24
Give an example each for the mixture having the following characteristics. Suggest a suitable method to separate the components of these mixtures.
(a) A volatile and a non-volatile component.
(b) Two volatile components with an appreciable difference in boiling points.
(c) Two immiscible liquids.
(d) One of the components changes directly from solid to gaseous state.
(e) Two or more coloured constituents soluble in some solvent.

Q.

How will you separate a mixture of mercury, oil and water?

Q. Four students took separately the mixture of sand, common salt and ammonium chloride in beakers, added water, stirred the mixture well and then filtered. They reported their observations as shown below.

Student	As residue	In the filtrate
I	Ammonium chloride	Sand Common salt
II	Common salt, Sand	Ammonium chloride
III	Sand, Ammonium chloride	Common Salt
IV	Sand	Ammonium chloride, Common salt

Who reported the observations in the correct order of the components as residue and in the filtrate ?
(1) I
(2) IV
(3) III
(4) II

Q.

2 What is the purpose of separation?

Q.

There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :

(a) Which process will you use to separte a mixture of A and B ?

(b) Which method will you use to separate a mixture of B and C ?

(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.

Q. A mixture of kerosene oil and water is an example of immiscible liquids. When left undisturbed, they form separate layers of oil and water. Can you identify which liquid comes to the bottom and at the top?

1. Top - Kerosene; Middle - Water; Bottom - Kerosene
2. Water comes to the top side and kerosene at the bottom
3. Water comes to the bottom and kerosene at the top side
4. Both get mixed well and it cannot be differentiated

Q.

Name the apparatus you would use to separate oil from water.

Q.

Name one pair of liquids which can be separated by using a separating funnel.

Q.

You are given a mixture of water, groundnut oil and common salt. How will you separate groundnut oil and common salt from it?

Q.

Which of the following methods can be used for separating the components of a homogeneous solid-liquid mixture?

1. Chromatography

2. Separating funnel

3. Distillation

4. Sedimentation

Q. How do you separate water and glycerin ?

Q. Milk is churned to separate cream from it. Why?

Q.

A mixture of milk and groundnut oil can be separated by :

(a) sublimation (b) evaporation (c) separating funnel (d) filtration

Q. Choose the appropriate option regarding the separation of a mixture of kerosene and water.

1. Top layer - Kerosene
   Bottom layer - Water
2. Top layer - Water
   Middle layer - Kerosene
   Bottom layer - Water
3. Top layer - Kerosene
   Middle layer - Water
   Bottom layer - Kerosene
4. Top layer - Water
   Bottom layer - Kerosene

Q.

Two liquids (P) and (Q) can be separated by the method of fractional distillation. The boiling points of P and Q are _____ and _______ respectively.

1. $329\mathrm{K}\mathrm{and}332\mathrm{K}$

2. $329\mathrm{K}\mathrm{and}354\mathrm{K}$

3. $329\mathrm{K}\mathrm{and}373\mathrm{K}$

4. $329\mathrm{K}\mathrm{and}473\mathrm{K}$

Q.

Which property of a substance does the process of distillation use as a basis for separation of components of a mixture ?

Q.

How do you separate benzene and water?

Q. Question 15
What would you observe when
(a) a saturated solution of potassium chloride prepared at ${60}^{\circ }C$ is allowed to cool at room temperature?
(b) an aqueous sugar solution is heated to dryness?
(c) a mixture of iron filings and sulphur powder is heated strongly?

Q. A mixture of oil and water can be separated by using ______ (separating/filtration) funnel.

Q.

A chemical compound which can be used to separate a mixture of carbon powder and sulphur powder successfully is

1. carbon dioxide

2. hydrochloric acid

3. carbon disulphide

4. hydrogen sulphide

Q.

Immiscible liquids are separated by using a ____________