Centrifugation

Q.

What is Elution?

Q.

Which method is used to separate cream from milk?

1. Adsorption

2. Crystallization

3. Distillation

4. Centrifugation

Q.

What is the principle behind the process of centrifugation?

1. Particles are separated based on the difference in temperature

2. Particles are separated based on the difference in colour

3. Denser particles are forced to the bottom and lighter particles stay at the top when spun rapidly

4. Lighter particles are forced to the bottom and denser particles stay at the top when spun rapidly

Q.

Which of the following method is used to separate a mixture of cooking oil and water?

1. Centrifugation

2. Fractional distillation

3. Using a separating funnel

4. Filtration

Q.

Which separation technique is used for the separation of butter from curd?

Q.

Name the technique used to separate butter from curd.

Q.

How is cream separated from milk?

Q.

State the principle used in the centrifugation technique used in the separation of mixture.

Q.

Name the method of separation used to separate cream from milk.

Q.

Is flotation a separation technique?

Q.

The zig-zag movement of particles suspended in liquids and gas is called …….. motion , named after the scientist ………

Q.

Name the process which is used in milk dairies to separate cream from milk.

Q. ___ works on the principle in which the denser particles are forced to the bottom and the lighter particles stay at the top when spun rapidly.

1. Sedimentation
2. Evaporation
3. Centrifugation
4. Crystallization

Q.

To separate colloidal particles centrifugation is used.

1. True
2. False

Q.

Which technique is used in a washing machine to squeeze out water from wet clothes while drying?

Q.

Which one of the following methods is used to dry clothes in washing machine?

1. Vaporisation

2. Fractional Distillation

3. Centrifugation

4. Distillation

Q.

Can a miscible liquid mixture be separated with the help of a separating funnel?

Q.

Particles of solid have the lowest distance between them.

1. True
2. False

Q.

What principle is applied in centrifugation? Give examples where this method is applied to separate mixtures. [3 MARKS]

Q. What is centrifugation?

Q. Which seperation technique do you use to
separate glycerine, coconut oil and water?

Q.

Your blood, when magnified, reveals different kinds of cells. Based on this information, your blood is an example of a:

1. pure substance

2. homogenous mixture

3. mechanical mixture

4. gaseous substance

Q.

Which one of the following methods is used to separate cream from milk?

1. Crystallization

2. Evaporation

3. Centrifugation

4. Sedimentation

Q.

Which one of the following statements is not true

1. The particles in solid vibrate about a fix position

2. The particles in liquid are arrange in regular pattern

3. The particles in gas exert negligibly small forces on each other , except during collison

4. The particles of gas occupy all spaces available

Q. Question 1 (e)
Which separation techniques will you apply for the separation of the following?
e. Butter from curd.

Q.

How is cream separated from milk?

Q.

Milk is a mixture of cream and water.

1. True
2. False

Q.

Why washing machine is a application of centrifugation?

Q. Explain the method of centrifugation.

Q.

Perform an activity to separate the cream from milk by the process of centrifugation.