Separation of Mixtures

Q. Which of the following methods is used to separate butter and buttermilk from curd?

1. Filtration
2. Churning
3. Evaporation
4. Sieving

Q. To separate a mixture of flour, water and salt, the mixture needs to undergo followed by .

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

Q. State whether the following statements are true or false.​

(a) A mixture of oil and water can be separated by filtration. ​
(b) Water can be separated from salt by evaporation.
(c) A mixture of wheat grains and wheat flour can be separated by sieving.
(d) A mixture of iron filings and rice flour can be separated by a magnet.
(e) A mixture of wheat grains and rice flakes can be separated by winnowing.
(f) A mixture of tea leaves and milk can be separated by decantation.​

Q.

Churning out butter from milk is a technique of ___________.

1. Mixing

2. Distillation

3. Filtering

4. Separation

Q.

Churning out butter from milk is an example of separation.

1. False

2. True

Q.

The need for churning milk to get butter out is___.

1. To obatin milk.

2. To remove impurities.

3. To get two useful components.

4. To add impurity.

Q.

Explain the technique used to separate the following mixtures:

1. Sugar from water

2. Stone and rice

Q. Boojho’s grandmother is suffering from diabetes. Her doctor advised her to take ‘Lassi’ with less fat content. Which of the following methods would be most appropriate for Boojho to prepare it? ​

1. Filtration​
2. Decantation​
3. Churning​
4. Winnowing​

Q.

Separation is done only to filter out unwanted components from a mixture.

True/False

1. True

2. False

Q.

Write true or false for the following statements:common salt is separated from water by the process of decantation

1. True
2. False

Q.

Churning out butter from milk is process of ___

Q. Which of the following methods is used to separate butter and buttermilk from curd?

1. Sieving
2. Filtration
3. Churning
4. Evaporation

Q.

Sonali was going to cook rice.She found husk particles in the rice.What should she do to separate those husk particles from rice before cooking rice? [1 MARK]

Q. An unknown solid substance X is added to a beaker containing liquid oil and stirred. After some time, X settles at the bottom of the beaker. Which of the following methods cannot be used to separate X from oil?​

1. Decantation​
2. Winnowing​
3. Filtration
4. Evaporation

Q. Explain the preparation of butter from milk.

Q. Filtration can be used to separate out solids that are soluble in the liquids.​

1. False​
2. True​

Q.

Sonali was going to cook rice.She found husk particles in the rice.What should she do to separate those husk particles from rice before cooking rice? [1 MARK]

Q. Which of the following statements is false?
(a) Tea can be separated from the leaves by filtration.
(b) A mixture of salt and sand can be separated by distillation.
(c) Winnowing will separate wheat grains from husk and dust.
(d) A mixture of sand and salt is partially soluble in water.

Q. Which of the following methods is used to separate butter and buttermilk from curd?

1. Filtration
2. Churning
3. Evaporation
4. Sieving

Q.

A mixture of iron nails, oil, water, tea leaves and salt is provided to you. Give step-wise instructions to separate each component from the mixture?

Q. Separation is done to filter out only the unwanted substances.

1. True
2. False

Q.

Churning out butter from milk is process of ___ .

Q. Different separation techniques can be used to remove the unuseful substances from a mixture.

1. True
2. False

Q.

What remains in the petri dish if a mixture of salt, sand and water is heated?

1. Both salt and sand

2. Both sand and water

3. Only sand

4. Only salt

Q. Which of the following methods is used to separate butter and buttermilk from curd?

1. Churning
2. Sieving
3. Filtration
4. Evaporation

Q. Study the table given below.
$$\begin{array}{ccc}\text{Mixture}& \text{Wanted Component}& \text{Unwanted Component}\\ \text{Wheat Flour}& \text{Flour}& \text{X}\\ \text{Y}& \text{Grain seeds}& \text{Stalks}\end{array}$$Based on the above information, identify X and Y.

1. X = Husk
   Y = Paddy
2. X = Wheat
   Y = Husk
3. X = Wheat
   Y = Sawdust
4. X = Husk
   Y = Sand

Q. Separation of the components of a mixture can give more than one useful substance.

1. False
2. True

Q.

A mixture of iron nails, oil, water, tea leaves and salt is provided to you. Give step-wise instructions to separate each component from the mixture?

Q. Match the following.

Separation process	Purpose for which we do the separation	What do we do with the separated components
1) Separate stones from rice	a) To remove non useful components	i) We throw away the impurities
2) Churning milk to obtain butter	b) To remove impurities or harmful components	ii) we throw away the solid component
3) Separate tea leaves	c) to separate two different but useful components.	iii) we use both the components.

1. 1) c) ii)
   2) a) i)
   3) b) iii)
2. 1) c) ii)
   2) b) i)
   3) a) iii)
3. 1) c) ii)
   2) a) iii)
   3) b) i)
4. 1) a) ii)
   2) c) i)
   3) b) iii)

Q. Which of the following methods is used to separate butter and buttermilk from curd?

1. Churning
2. Sieving
3. Evaporation
4. Filtration