Decantation

Q.

How Will You Separate Sand and Water From Their Mixture?

Q.

Oil can be separated from water by:

1. filtration

2. decantation

3. threshing

4. sedimentation

Q.

Question 7

You might have observed the preparation of ghee from butter and cream at home. Which method(s) can be used to separate ghee from the residue?

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

Which of the following combination is the correct answer?

Q. Decantation is the process used to separate two miscible liquids.

1. False.
2. True.

Q.

The removal of dust particle from rice is done by ______ .

1. Threshing

2. Sieving

3. Decantation

4. Sedimentation

Q.

Pick the odd one out.

1. Threshing

2. Decantation

3. Winnowing

4. Sieving

Q.

Oil can be separated from water using

1. Filtration

2. Both Sedimentation and Decantation

3. Sedimentation

4. Decantation

Q.

Separation of kerosene oil and water is done by ___

1. Decantation

2. Sedimentation

3. Crystallisation

4. Evaporation

Q.

Decantation is the process used to separate two miscible liquid.

1. True

2. False

Q.

79 A mixture of tea leaves and milk can be separated by decantation

1. True
2. False

Q.

Oil can be separated from water by the process of ___.

Q. How can we seperate oil from water

Q.

How will you separate a mixture containing chalk, iodine and sodium chloride?

Q.

Which of the following is not a solid-liquid mixture?

1. Iron filings and sulphur

2. Salt and water

3. Chalk powder and water

4. Sugar and milk

Q.

21 Water is separated from rice and pulses after washing them. How?

Q.

Find the odd one out. Give a reason for your answer.

1. sedimentation

2. decantation

3. filtration

4. defecation

Q.

Differentiate between

c. Sedimentation and decantation

Q. Decantation is used to separate a mixture of immiscible liquids or an insoluble solid in liquid.

1. True
2. False

Q. Which of the following techniques can be used to separate a solid-liquid mixture with insoluble solid component?

1. Winnowing
2. Filtration
3. Sedimentation-decantation
4. Handpicking

Q. Substances W, X, Y, and Z are obtained from different types of mixtures by using appropriate separating processes as shown in the given flowchart: Separating processes used to obtain W, X, Y, and Z respectively are:

1. Winnowing, filtration, sedimentation and evaporation
2. Handpicking, sedimentation, winnowing, and evaporation
3. Sieving, evaporation, filtration and separating funnel
4. Sedimentation, winnowing, filtration and separating funnel

Q.

Question 17

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

Q.

8 Separation of oil and water from their mixture can be done by which method?

Q.

Question 7

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

Q. Define the process of sedimentation and decantation. [1 mark]

Q.

Using which method can green chillies be separated from noodles?

1. Handpicking

2. Winnowing

3. Evaporation

4. Sieving

Q. The process in which water is removed along with the impurity is known as___________.

1. crystallisation
2. sedimentation
3. decantation
4. chromatography

Q.

Karan took a beaker and mixed ink and water in it.Will he be able to separate ink and water using decantation process? Explain it. When can we use decantation? [3 MARKS]

Q.

Question 5

How will you separate sand and water from their mixture?

Q.

Oil can be separated from water using ___.

1. Decantation

2. Both Sedimentation and Decantation

3. Sedimentation

4. Filtration

Q. Ram and Rahul bought a packet of candies. The packet contains candies of different colours. If Ram wants only red coloured candies, which method of separation should he use to separate the red candies from the rest?

1. Filtering
2. Handpicking
3. Sieving
4. Threshing