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MCQ Questions for Class 6 Science Chapter 5 Separation of Substances with Answers

Students can practice the NCERT MCQ Questions for Class 6 Science Chapter 5 Separation of Substances with Answers Pdf free download is available here. Revise all the concepts easily by taking help from the MCQ Questions for Class 6 Science with Answers are prepared based on the latest exam pattern. Students can refer to these Separation of Substances Class 6 MCQs Questions with Answers and assess their preparation level.

Separation of Substances Class 6 MCQs Questions with Answers

I. Choose the correct option.

Question 1.
Mixtures need to be separated because
(a) to remove undesirable substances
(b) to get desirable substances
(c) to obtain highly pure substances
(d) all of the above

Answer

Answer: (d) all of the above


Question 2.
The method of separation used to separate stones from rice is
(a) handpicking
(b) threshing
(c) winnowing
(d) all of these

Answer

Answer: (a) handpicking


Question 3.
Butter is separated from milk by
(a) sedimentation
(b) filtration
(c) churning
(d) decantation

Answer

Answer: (c) churning


Question 4.
The separation of grains from husk is done by the process of
(a) handpicking
(b) sieving
(c) winnowing
(d) threshing

Answer

Answer: (c) winnowing


Question 5.
Threshing is done by
(a) beating
(b) animals
(c) machines
(d) all of these

Answer

Answer: (d) all of these


Question 6.
Filtration is a method to separate the components of a
(a) solution
(b) mixture of a liquid and an insoluble substance
(c) both (a) & (b)
(d) pure substance

Answer

Answer: (b) mixture of a liquid and an insoluble substance


Question 7.
A solid is dissolved in water. Which one of the following methods can be used to separate it?
(a) Filtration
(b) Decantation
(c) Distillation
(d) Evaporation

Answer

Answer: (d) Evaporation


Question 8.
Petroleum contains
(a) petrol
(b) methanol
(c) oil
(d) water

Answer

Answer: (a) petrol


Question 9.
Which of the following method is used when there is a difference in size and colour of desirable and
undesirable constituents?
(a) Handpicking
(b) Threshing
(c) Filtration
(d) Decantation

Answer

Answer: (a) Handpicking


Question 10.
The components of a solution of sugar in water can be separated by
(a) filtration
(b) crystallisation
(c) decantation
(d) sedimentation

Answer

Answer: (b) crystallisation


Question 11.
At water treatment plants, the river water is filtered by using
(a) filter paper
(b) porcelain filters
(c) cloth filters
(d) sand filters

Answer

Answer: (d) sand filters


Question 12.
The process of separating grains from the stalks is called
(a) handpicking
(b) threshing
(c) decantation
(d) evaporation

Answer

Answer: (b) threshing


Question 13.
Iodine can be recovered from tincture of iodine by the process of
(a) filtration
(b) distillation
(c) evaporation
(d) decantation

Answer

Answer: (c) evaporation


Question 14.
A mesh which is used to separate things on the basis of their difference in size
(a) sieve
(b) thresher
(c) filter paper
(d) none of these

Answer

Answer: (a) sieve


Question 15.
The process of conversion of water into vapour is called
(a) condensation
(b) evaporation
(c) sedimentation
(d) decantation

Answer

Answer: (b) evaporation


Question 16.
The process of separation of tea leaves by strainer is called
(a) filtration
(b) sedimentation
(c) evaporation
(d) condensation

Answer

Answer: (a) filtration


Question 17.
Which of the following mixtures cannot be separated by using water as solvent followed by filtration
and evaporation?
(a) Sand and sugar
(b) Salt and chalk powder
(c) Sand and sulphur
(d) Blue vitriol and sand

Answer

Answer: (c) Sand and sulphur


Question 18.
The property which forms the basis of sieving is
(a) difference in weight
(b) difference in colour
(c) difference in shape
(d) difference in size

Answer

Answer: (d) difference in size


Question 19.
When no more salt dissolves in water at a particular temperature, then the solution at that temperature
is called
(a) unsaturated
(b) saturated
(c) supersaturated
(d) none of these

Answer

Answer: (b) saturated


Question 20.
The separation of insoluble solids from liquids can be done by
(a) sedimentation
(b) decantation
(c) loading
(d) all of these

Answer

Answer: (a) sedimentation


II. Fill in the blanks with suitable word/s.

Question 1.
Milk is a mixture of ……………. , …………… and ………………

Answer

Answer: milk-proteins, water, cream


Question 2.
……………… substance contains particles of only one type.

Answer

Answer: Pure


Question 3.
……………… and ……………… are the types of mixtures.

Answer

Answer: Heterogeneous, homogeneous


Question 4.
Pebbles can be separated from wheat by ………………

Answer

Answer: handpicking


Question 5.
……………… is used to separate husk from wheat.

Answer

Answer: Winnowing


Question 6.
Glass is a ………………

Answer

Answer: mixture


Question 7.
Common salt is obtained from sea water by ………………

Answer

Answer: evaporation


Question 8.
Compounds have ……………… melting points.

Answer

Answer: fixed


Question 9.
Cream is separated from milk by the process of ………………

Answer

Answer: churning


Question 10.
The method used to separate the components of different sizes in a mixture using a sieve is called ………………

Answer

Answer: sieving


Question 11.
The process of separating grains from the stalks is called ………………

Answer

Answer: Threshing


Question 12.
Fine sand can be separated from larger particles by ………………

Answer

Answer: sieving


Question 13.
Breaking of stalks from grains is done by a machine called ………………

Answer

Answer: Threshers


Question 14.
Butter is a component of ………………

Answer

Answer: buttermilk


Question 15.
Mixture may be solid, liquid or ………………

Answer

Answer: gas


Question 16.
……………… is used for separating insoluble substances from a liquid.

Answer

Answer: Filtration


Question 17.
Sedimentation can be done more quickly by adding ……………… into it.

Answer

Answer: alum


Question 18.
The used tea-leaves are separated from tea by the method of ………………

Answer

Answer: filtration


Question 19.
The changing of liquid into vapours is called ………………

Answer

Answer: evaporation


Question 20.
Components retain their properties in a ………………

Answer

Answer: mixture


III. State whether the given statements are true or false.

Question 1.
Milk is a pure substance.

Answer

Answer: False


Question 2.
Evaporation is a continuous process.

Answer

Answer: True


Question 3.
Air is a mixture of gases.

Answer

Answer: True


Question 4.
Filtration can remove any solid substance which are dissolved in a liquid.

Answer

Answer: False


Question 5.
A mixture of chalk powder and water is separated by sieving.

Answer

Answer: False


Question 6.
A mixture of oil and water can be separated by decantation.

Answer

Answer: True


Question 7.
Rocks are pure substances.

Answer

Answer: False


Question 8.
Ink loses its properties when mixed in water.

Answer

Answer: False


Question 9.
Common salt is a pure substance.

Answer

Answer: True


Question 10.
Loading helps the suspended clay particles to settle down.

Answer

Answer: True


IV. Match the following

Column I Column II
1. Purification of water (a) Threshing
2. Separating butter from curd (b) Alum
3. Separation of grains from stalks (c) Churning
4. Separating larger size impurities (d) Evaporation
5. Separation by wind (e) Handpicking
6. Separation of common salt from water solution (f) Winnowing
7. Separating iron particles from dust (g) Sedimentation
8. Separating bran from flour (h) Magnet
9. Conversion of water into liquids (i) Sieving
10. Setting of heavier components at bottom (j) Condensation
Answer

Answer:

Column I Column II
1. Purification of water (b) Alum
2. Separating butter from curd (c) Churning
3. Separation of grains from stalks (a) Threshing
4. Separating larger size impurities (e) Handpicking
5. Separation by wind (f) Winnowing
6. Separation of common salt from water solution (d) Evaporation
7. Separating iron particles from dust (h) Magnet
8. Separating bran from flour (i) Sieving
9. Conversion of water into liquids (j) Condensation
10. Setting of heavier components at bottom (g) Sedimentation

We think the shed NCERT MCQ Questions for Class 6 Science Chapter 5 Separation of Substances with Answers Pdf free download will benefit you to the fullest. If you need any kind of assistance while practicing CBSE Class 6 Science Separation of Substances MCQs Multiple Choice Questions with Answers, do leave us your queries and we will look into it and add it accordingly.

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