Class 5 Science Separation of Mixture – Notes Question Answers
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Multiple Choice Questions (15*1)
1.) Which method is used to manually separate larger particles from a mixture?
a.) Sieving
b.) Hand picking
c.) Winnowing
d.) Magnet separation
Answer: b.) Hand picking
2.) Which method is used to separate grains and chaff?
a.) Sieving
b.) Hand picking
c) Winnowing
d) Magnet separation
Answer: c. Winnowing
3.) Sieving is used to separate particles that are:
a.) Similar in size
b.) Different in size
c) Dissolved in a water
d) Bigger in size
Answer: a.) Similar in size
4.) Which of the following mixture can be separated using magnet separation as well hand picking method?
a.) Sand and salt
b.) Iron nails and sand
c) Flour and sugar
d) Salt and water
Answer: b.) Iron nails and sand
5.) After filtration the substance that gets obtained on the filter paper is known as:
a.) Filtrate
b.) Residue
c) Decant
d) None of the above
Answer: b.) Residue
6.) Which method is used to separate stone chips from sand?
a.) Sieving
b.) Hand picking
c) Winnowing
d) Magnet separation
Answer: a.) Sieving
7.) Which method is not effective for separating iron filings and sand mixture?
a.) Sieving
b.) Hand picking
Winnowing
Magnet separation
Answer: c. Winnowing
8.) Which of the following mixtures can be separated by sieving method?
a.) Water and oil
b.) Grains and chaff
c) Milk and flakes
d) Iron chips and copper balls
Answer: c. Milk and flakes
9.) Which method is used to separate substances that are attracted to a magnet from a mixture?
a.) Sieving
b.) Hand picking
c) Winnowing
d) Magnet separation
Answer: d. Magnet separation
10.) Hand picking is a suitable method for separating which of the following mixtures?
a.) Water and sugar
b.) Sand and dust
c) Flowers and leaves
d) Chaff and grains
Answer: c. Flowers and leaves
11.) What is a vital condition for winnowing process?
a.) Water
b.) Mud
c) Wind
d) Fire
Answer: c. Wind
12.) Which separation method is best suited for separating a mixture of sand and water?
a.) Sieving
b.) Hand picking
c) Magnet separation
d) None of the above
Answer: d. None of the above
13.) What happens to the lighter components during winnowing?
a.) They fall in the bottom
b.) They gets separated in the air
c) They stick to the sieve
d) They get attached to a magnet
Answer: b.) They gets separated in the air
14.) When using the sieving method, which particles don’t pass through the sieve?
a.) Larger particles
b.) Smaller particles
c) Particles with magnetic properties
d) Particles with similar colors
Answer: a.) larger particles
15.) Which of the following is an example of solid-solid mixture?
a.) Water and oil
b.) Sand and sea water
Milk and corn flake
Iron nails and pebbles
Answer: d. Iron nails and pebbles
Match the following items in column A and B (5*1=5)
Column A |
Column B |
1. Rice and stone | a. Winnowing |
2. Chalk powder and water | b. Magnetic separation |
3. Water and cooked rice | c. Filtration |
4. Iron balls and copper balls | d. Hand picking |
5. Grains and husk | e. Sieving |
Answer 1-d, 2-c, 3-e, 4-b, 5-a
Write True/False in the following sentences (10*1=10)
I.) The sieving method is used to separate wheat flour from flour worms.
Answer: True
II.) Winnowing separates the lighter components from heavier component.
Answer: True
III.) Sugar is separated from its solution by decantation method.
Answer: False
IV.) Sieving method is used to separate mixtures by passing the mixture through mesh or sieve.
Answer: True
V.) Filtration is a method is usually used to separate solid particles from a liquid mixture.
Answer: True
VI.) Hand picking can be used to separate sand from seawater.
Answer: False
VII.) Sieving is an efficient method for separating sand from a mixture of sand and water.
Answer: False
VIII.) Magnet separation is useful for separating iron filings from a mixture of iron filings and sand.
Answer: True
IX.) Filtration can be used to separate a mixture of ink and water.
Answer: True
X.) Hand picking is a suitable method for separating a mixture of oil and water.
Answer: False
Short answer question (10*1=10)
1.) What is hand picking process of separation?
Answer: Hand picking involves manually separating substances from a mixture where the particles are visible distinguished and can be picked up by hand.
2.) Explain sieving method.
Answer: Sieving is a method of separating particles based on their size by passing the mixture through a fine mesh or sieve.
3.) Name some of the methods of separating matters.
Answer: Some methods that can be used for separating substances are,
i.) Hand picking
ii.) Filtration
iii.) Separation using magnet
iv.) Sieving
v.) Winnowing
vi.) Churning
4.) Write the limitation of using sieving method of separation.
Answer: Sieving cannot separate particles that are same in size or when the particles are smaller than the mesh size of the sieve.
5.) How does sieving work as a separation technique?
Answer: Sieving involves passing a mixture through a sieve or mesh to separate particles based on their size. Smaller particles pass through the fine mesh while larger ones are retained on top.
6.) What kind of mixtures is hand picking most effective for?
Answer: Hand picking is most effective for mixtures that are visibly distinct and can be easily picked by hand, for example picking out marble balls from a pile of sand.
7.) Give an example of sieving method used in daily life.
Answer: Sieving is used while making tea to separate the tea leaves from the liquid.
8.) How does winnowing help in the separation of mixtures in agriculture?
Answer: In agriculture, winnowing is used to separate grain from chaff, as the lightweight chaff is blown away by the heavy wind while the heavier grains fall back down due to gravity.
9.) What does the term “residue” means in the context of sieving?
Answer: The residue in sieving refers to the particles that are left behind on the sieve after the process is completed.
10.) What types of mixtures can be separated using magnetic separation?
Answer: Magnetic separation is useful for separating mixtures that contains magnetic and non-magnetic components, such as separating iron chips from a mixture of iron chips and copper chips.
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