Sedimentation

Q.

What is sedimentation?

Q.

Differentiate between the following:

Filtrate and Residue

Q.

What are the differences between solid mixing and liquid mixing?

Q.

Define residue.

Q.

Differentiate between residue and filtrate.

Q.

Define filtrate.

Q.

What do we mean by churning? Where is it used? [2 MARKS]

Q.

Give examples of separation of solid-liquid mixtures.

Q.

The process of increasing the rate of sedimentation in a suspension by adding some chemical is known as ___ .

1. condensation

2. filtration

3. crystallisation

4. loading

Q.

How is churning a sort of separation?

Q. The process of increasing the rate of sedimentation in a suspension by adding some chemical is known as

1. Condensation.
2. Crystallisation.
3. Loading.
4. Filtration.

Q.

Explain the following terms.

Loading

Q.

In churning milk, the need for churning out butter is:

1. to obatin milk

2. to remove impurities

3. to add impurity

4. to obtain two useful components

Q.

Define sedimentation?

Q.

The insoluble solid left behind on the filter paper during filtration is called __________ .

Q.

During filtration, the solution collected at the bottom of the conical flask is called ______?

Q.

Why is loading used to separate suspended impurities?

Q. Distillation is the method of getting a pure liquid from a solution by ________ and then __________.

1. freezing, evaporating
2. evaporating, condensing
3. condensing, evaporating
4. evaporating, freezing

Q. A glass of apple juice mixed with 2 glasses of water can be separated by filtration.

1. True
2. False

Q. How would you obtain clear water from a sample of muddy water?

Q.

The clear liquid over the ______ is called supernatant.

Q. The dust particles in the water can be helped to settle down faster by using:

1. Alcohol
2. Alum
3. Sugar
4. Chlorine

Q.

The clear liquid obtained after filtration is called

1. residue

2. filtrate

3. sediments

4. none of these

Q.

67 The process of settling heavier particles is called ……….

Q.

The solid particle which remain on the filter paper are called as

---

and the liquid which passes through it is called as

---

Q. Sedimentary layers over a period of time are compacted and cemented to form

1. Mountains.
2. Deserts.
3. Hills.
4. Sedimentary rocks.

Q.

In the treatment of water, solid impurities are allowed to settle at the bottom. This particular stage in the entire purification is called ___

1. Sublimation

2. Sedimentation

3. Distillation

4. Chlorination

Q. Which of the following separation techniques is used to separate a mixture of two or more miscible liquids?

1. Sedimentation
2. Distillation
3. Hand picking
4. Decantation

Q.

Fill in the blanks with appropriate word. The process of settling of heavier particles is called_____.

Q.

Groundnuts can be separated from rice by _______ .

1. Sedimentation

2. Handpicking

3. Threshing

4. Winnowing