Filtration, Sedimentation and Decantation

Q.

Explain sedimentation and decantation.

Q. _______ is a method used to separate insoluble solids from a solid-liquid mixture.

1. Threshing
2. Filtration
3. Chromatography
4. Winnowing

Q. A mixture of milk and water can be separated by filtration.

1. True
2. False

Q.

Can sedimentation and decantation be used to separate a mixture of salt and water? Give reasons for your answer.

Q.

Define the following term:

Filtrate

Q. Identify the following processes involved in the following activites:
Activity 1: Rice and water are taken in a beaker. The mixture is allowed to stand for sometime. Rice settle down at the bottom.

Activity 2: Water is gently poured out into another beaker without disturbing the rice.

1. Activity 1: Decantation
   Activity 2: Sedimentation
2. Activity 1: Sedimentation
   Activity 2: Decantation
3. Activity 1: Filtration
   Activity 2: Decantation
4. Activity 1: Sedimentation
   Activity 2: Filtration

Q.

Explain the process of sedimentation and decantations?

Q. Rinku observed that the vendor at a juice corner is using a strainer to separate the fruit pulp and seeds from the juice. Which method of separation is he using?

1. Filtration
2. Evaporation
3. Condensation
4. Distillation

Q.

Sedimentation is followed by decantation in the separation of solid-liquid mixtures.

1. True
2. False

Q.

Explain the proces of sedimentation and decantation with the help of an example.

Q.

In which of the following cases can we use sedimentation and decantation as a method for separation of the components?

1. For separating salt and water from salt solution

2. For separating stones and rice

3. For separating oil and water

4. For separating mixture of chalk powder and wheat flour

Q. Can sedimentation and decantation be used to separate a mixture of salt and water ?

Q. Filter paper is a type of sieve.

1. True
2. False

Q. Filtration is used to separate coffee beans from brewed coffee.

1. True
2. False

Q.

A mixture of milk and water can be separated by sedimentation and decantation.

1. True
2. False

Q. Fruit seeds can be separated from juice by .

1. winnowing
2. filtration
3. threshing

Q.

State the principle involved in separation of solid-liquid mixtures by - sedimentation and decantation

Q. Filter paper is helpful in separating insoluble particles from a liquid.

1. solid
2. liquid
3. gas

Q. A mixture P on filtration gives two components - water and a component Q collected on filter paper. Which among the following can be the component Q?

1. Salt
2. Oil
3. Sand
4. Sugar

Q.

In preparing tea, the tea leaves are filtered in order to:

1. To get two useful component

2. To obatin tea

3. To add impurity

4. To remove impurities

Q.

Explain the following terms.

Filtration

Q. Rahul mixed chalk powder in water, but now he want to seperate the two components. Which of the following methods can he use?

1. Sedimentation
2. Filtration
3. Winnowing
4. Condensation

Q.

Name the process by which sand is separated from its mixture in water.

Q.

Explain the methods required for the separation of the following mixtures.

common salt, sand, and marbles

Q.

Sarina was feeling thirsty but there was a pot of water at her home which was muddy and unfit to drink.How do you think Sarina would have made this water fit for drinking if the following materials were available to her?

alum. gas stove

Pan

Lid

Muslin cloth

Thread

Tub

Q.

Explain the following method of separation with an example each.

Sedimentation and decantation.

Q.

The process of settling down of a heavy, insoluble solid is called decantation.

1. True
2. False

Q. what are micelles

Q.

When do we use sedimentation and decantation as the method of separation of mixtures?

Q. Consider the table below:
$$\begin{array}{ccc}\text{Mixture}& \text{Component 1}& \text{Component 2}\\ \text{X}& \text{Chalk Powder}& \text{Water}\\ \text{Y}& \text{Flour}& \text{Husk}\end{array}$$ Which of the following methods can be used to separate the components of mixture X and Y?

1. X- Filtration, Y- Sieving
2. X- Winnowing, Y- Sieving
3. X- Seiving, Y- Distillation
4. X- Condensation, Y- Evaporation