Methods to Separate Mixtures

Q.

Explain the ways to separate solid solid mixtures ? Briefly explain each?

Q.

What type of mixtures can be separated by filtration?

Q.

Mixtures can be separated by physical methods to get the substances from which the mixture was formed.

1. Filtering

2. Hand Picking

Q.

31 Write four materials that can be used for the process of filtration.

Q.

3. Identify the method of separation

iii. soil and water

Q.

Filtration is a method to separate the components of a

1. Solution

2. The mixture of a liquid and an insoluble substance.

3. both (A) and (B)

4. Pure substance

Q.

While diluting a solution of salt in water, a student by mistake added acetone (boiling point 56$°$C). What technique can be employed to get back the acetone? Justify your choice

Q.

A mixture of Sulphur powder and water can be separated by ______.

Q.

Name the process by which following components can be separated:powdered glass and suphur

Q.

Which separation method is used to separate different mixtures mentioned in column 2?

Column 1	Column 2
(a) Separating Funnel	(1) Mixture of acetone and water
(b) Distillation	(2) Mixture of ethanol and methanol
(c) Fractional distillation	(3) Mixture of kerosene and water
(d) Centrifugation	(4) Removal of water from clothes in washing machine

1. a - (3), b - (1), c - (2), d - (4)

2. a - (1), b - (3), c - (2), d - (4)

3. a - (4), b - (2), c - (3), d - (1)

4. a - (1), b - (2), c - (3), d - (4)

Q.

Explain the principle of the filtration process.

Q.

Which of the following mixtures would you be able to separate using the method of filtration?

1. Cornflakes in milk

2. Salt in water

3. Sugar in milk

4. Oil in water

Q.

How will you separate the components of the mixture containing sand, water, and mustard oil?

Q.

Match the entries of column I with column II

Mixtures	Methods of separation
(a) Mixture of chaff and grain	(i) Evaporation
(b) Iron powder from a mixture of iron and aluminium powder	(ii) Winnowing
(c) Common salt from seawater	(iii) Magnetic separation

1. (a) - (ii), (b) - (iii), (c) -(i)

2. (a) - (i), (b) - (ii), (c) -(iii)

3. (a) - (iii), (b) - (i), (c) -(ii)

4. (a) - (iii), (b) - (ii), (c) -(i)

Q.

Differentiate between

b. Handpicking and winnowing

Q.

Name the process by which all the dye can be received from black ink.

Q.

Name the method you will employ to separate:

Suspended solids in liquids.

Q. Which of the following mixture can be separated by filtration?

Q.

81 Name the method used to separate the husk from wheat?

Q.

9 Filtration is used for what purpose?

Q. A mixture contains three different substances X, Y and Z. The characteristics of X, Y and Z are given below:
X: Sublimes on heating, Non-magnetic
Y: Does not sublime on heating, Magnetic
Z: Does not sublime on heating, Non-magnetic

Which techniques can be used in order to separate Z from the given mixture?

1. Sublimation
2. Magnetic separation
3. Both sublimation and magnetic separation
4. Any one out of sublimation and magnetic separation

Q. A mixture of iron nails, salt, oil and water is provided to you. Give stepwise methods to separate each component from this mixture. (3 marks)

Q.

With reference to the mixture of iron and sulphur, state the main characteristics of mixture.

Q. The process of removing tea leaves from tea using a strainer is known as __________.

1. sedimentation
2. evaporation
3. filtration
4. decantation

Q. The components of which among the following mixtures can be separated by filtration?

1. Ink in water
2. Cornflakes in milk
3. Salt in water
4. Sugar in milk

Q. Which property of a filter paper is used to separate an insoluble solid from a liquid?

Q. Which of the following process gives salt from sea water?

1. Filtration
2. Centrifugation
3. Melting
4. Evaporation

Q. The components of which among the following mixtures can be separated by filtration?

1. Ink in water
2. Cornflakes in milk
3. Salt in water
4. Sugar in milk

Q. Match the mixtures with their preferred method of separation.

1. Chromatography
2. Sublimation
3. Evaporation

Q. is used to separate heavier components of a mixture from the lighter components with the help of wind.

1. Threshing
2. Winnowing
3. Sieving