Are you looking for Class 6 Science Chapter 9 – Methods of Separation in Everyday Life MCQ Questions with Answers? You are in the right place! These multiple choice questions are based on the CBSE Curiosity Book and help students practice important concepts and prepare effectively for exams.
Table of Contents
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Class 6 Science Chapter 9: Methods of Separation in Everyday Life MCQ Questions with Answers
Multiple Choice Questions
Choose the correct option for each questionThreshing is the process of beating stalks to free the grains from them.
In sedimentation, heavier insoluble particles settle down at the bottom of the container due to gravity.
Decantation involves gently pouring the clear liquid into another container without disturbing the sediment at the bottom.
In winnowing, wind carries away the lighter husk particles while the heavier grains fall straight down, separating the two.
Churning spins the milk rapidly, causing the lighter cream (fat) to separate from the heavier liquid.
Sieving separates particles of different sizes using a mesh. Fine wheat flour passes through, while the larger husk particles remain on the sieve.
On heating (or leaving in the sun), the water evaporates into vapor, leaving the solid salt crystals behind.
Filtration uses a porous barrier like filter paper or cloth to separate insoluble solids from liquids.
A magnet attracts magnetic materials like iron nails, easily pulling them out of non-magnetic mixtures like sawdust.
In water treatment, large suspended particles are allowed to settle down (sedimentation), and the cleaner water above is transferred to another tank (decantation).
Handpicking works well when undesirable substances can be visually distinguished by their size, shape, or color and picked out manually.
Churning curd or milk separates the solid butter (fat) from the liquid buttermilk.
Winnowing relies on wind or blowing air to carry away lighter particles (like husk) from heavier particles (like grains).
Since chalk powder is insoluble in water, passing the mixture through a filter paper allows the water to pass through while the chalk is trapped.
Sieving works entirely on the principle of size difference; smaller particles pass through the holes of the mesh, while larger ones remain on top.
Oil and water are immiscible liquids that form separate layers. A separating funnel allows the heavier bottom layer (water) to be drained out, leaving the oil behind.
Household water filters use various filtering membranes (like RO or simple porous candles) to remove suspended particles from drinking water.
Decantation removes the large, heavy particles that settle at the bottom. Following up with filtration ensures that any remaining fine, suspended particles are also removed.
Handpicking works only when components are visibly distinct and large enough to pick by hand. Salt and sugar crystals are too similar in size and color to separate this way.
Magnetic separation is based entirely on the attraction of magnetic materials (like iron, nickel, or cobalt) by a magnet, leaving non-magnetic materials behind.
Which method is commonly used to separate grains from stalks after harvesting?
(a) Handpicking
(b) Threshing
(c) Winnowing
(d) Filtration
Show Answer
Answer: (b) Threshing
Explanation: Threshing is the process of beating stalks to free the grains.
Question 2.
Which separation method is used when heavier particles settle down at the bottom of water?
(a) Filtration
(b) Sedimentation
(c) Decantation
(d) Evaporation
Show Answer
Answer: (b) Sedimentation
Explanation: In sedimentation, heavier insoluble particles settle down at the bottom.
Question 3.
What is the process of pouring out clear water without disturbing settled impurities called?
(a) Sedimentation
(b) Decantation
(c) Filtration
(d) Distillation
Show Answer
Answer: (b) Decantation
Explanation: Decantation involves gently pouring the clear liquid into another container.
Question 4.
Which separation technique is used by farmers to separate husk from wheat?
(a) Threshing
(b) Sieving
(c) Winnowing
(d) Churning
Show Answer
Answer: (c) Winnowing
Explanation: In winnowing, wind carries away the lighter husk while heavier grains fall straight down.
Question 5.
Which method is used to separate cream from milk?
(a) Filtration
(b) Churning
(c) Evaporation
(d) Sedimentation
Show Answer
Answer: (b) Churning
Explanation: Churning spins the milk, causing the lighter cream to separate from it.
Question 6.
Which of these mixtures can be separated by sieving?
(a) Sand and iron filings
(b) Wheat flour and husk
(c) Salt and water
(d) Oil and water
Show Answer
Answer: (b) Wheat flour and husk
Explanation: Sieving separates particles of different sizes using a mesh.
Question 7.
Which separation method is used to obtain salt from seawater?
(a) Sedimentation
(b) Decantation
(c) Evaporation
(d) Filtration
Show Answer
Answer: (c) Evaporation
Explanation: On heating, water evaporates leaving salt crystals behind.
Question 8.
In which separation method is a filter paper commonly used?
(a) Churning
(b) Sedimentation
(c) Filtration
(d) Winnowing
Show Answer
Answer: (c) Filtration
Explanation: Filtration uses filter paper or cloth to separate insoluble solids from liquids.
Question 9.
Which method is useful to separate iron nails from sawdust?
(a) Sieving
(b) Handpicking
(c) Magnetic separation
(d) Filtration
Show Answer
Answer: (c) Magnetic separation
Explanation: A magnet attracts iron nails while leaving sawdust behind.
Question 10.
Which process is used in water treatment plants to remove suspended impurities?
(a) Sedimentation and decantation
(b) Distillation
(c) Churning
(d) Evaporation
Show Answer
Answer: (a) Sedimentation and decantation
Explanation: Large particles settle by sedimentation, and clean water is removed by decantation.
Question 11.
Which of these methods is used when components differ in size and shape?
(a) Handpicking
(b) Winnowing
(c) Churning
(d) Evaporation
Show Answer
Answer: (a) Handpicking
Explanation: Handpicking works when undesirable substances can be seen and picked manually.
Question 12.
Which separation process is used in making butter at home?
(a) Filtration
(b) Churning
(c) Sieving
(d) Evaporation
Show Answer
Answer: (b) Churning
Explanation: Churning separates butter (fat) from buttermilk.
Question 13.
Which separation method uses wind to separate lighter and heavier components?
(a) Threshing
(b) Winnowing
(c) Sedimentation
(d) Filtration
Show Answer
Answer: (b) Winnowing
Explanation: Winnowing relies on wind or blowing air to separate husk from grains.
Question 14.
Which method is used to separate chalk powder from water?
(a) Sieving
(b) Filtration
(c) Winnowing
(d) Churning
Show Answer
Answer: (b) Filtration
Explanation: A filter paper allows water to pass through while chalk remains on the filter.
Question 15.
What is the principle of sieving?
(a) Difference in density
(b) Difference in solubility
(c) Difference in particle size
(d) Difference in colour
Show Answer
Answer: (c) Difference in particle size
Explanation: Sieving works because smaller particles pass through mesh, while larger remain.
Question 16.
Which method is used to separate oil from water?
(a) Sedimentation
(b) Decantation using a separating funnel
(c) Filtration
(d) Sieving
Show Answer
Answer: (b) Decantation using a separating funnel
Explanation: Oil and water are immiscible liquids and can be separated by a separating funnel.
Question 17.
Which separation process is used to purify drinking water at home?
(a) Filtration
(b) Winnowing
(c) Churning
(d) Threshing
Show Answer
Answer: (a) Filtration
Explanation: Filtration removes suspended particles from drinking water.
Question 18.
Why is decantation followed by filtration in some cases?
(a) To make process faster
(b) To remove both large and fine particles
(c) To change liquid into gas
(d) To dissolve impurities
Show Answer
Answer: (b) To remove both large and fine particles
Explanation: Decantation removes large settled particles, while filtration removes smaller ones.
Question 19.
Which of the following mixtures cannot be separated by handpicking?
(a) Rice and stones
(b) Sand and iron nails
(c) Salt and sugar
(d) Pulses and small pebbles
Show Answer
Answer: (c) Salt and sugar
Explanation: Handpicking works only when components are visible and large enough to pick by hand.
Question 20.
Which principle is used in magnetic separation?
(a) Difference in solubility
(b) Difference in colour
(c) Difference in magnetic properties
(d) Difference in size
Show Answer
Answer: (c) Difference in magnetic properties
Explanation: Magnetic separation is based on attraction of magnetic materials like iron by a magnet.
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Conclusion
We hope these Class 6 Science MCQ Questions with Answers for Chapter 9 – Methods of Separation in Everyday Life helped you in your preparation. Practice more to master the concepts and score higher in your exams.
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Frequently Asked Questions (FAQs) on Methods of Separation in Everyday Life Class 6 MCQ Questions
A1: The best way to practice Class 6 Science MCQ questions is to go through each chapter’s concepts from your textbook and then attempt MCQs chapter-wise. This helps reinforce learning and improve concept clarity.
A2: Yes, all the multiple choice questions provided here are strictly based on the CBSE Class 6 Science Curiosity Book syllabus to ensure complete exam relevance.
A3: Absolutely! These MCQs are perfect for school assessments, classroom practice, and quick revision before exams.
A4: Yes, answers are provided for every MCQ to help students cross-check and learn from their mistakes.
A5: MCQ questions improve analytical thinking, speed, and concept retention. Regular practice helps students become confident and perform better in exams.
A6: You can explore more chapter-wise Class 6 Science MCQ Questions with answers on our website’s dedicated section: Class 6 Science MCQ Questions.
