MCQ on Exploring Magnets Body Class 6
Class 6 Science Chapter 4 MCQ Exploring Magnets
Choose the correct option:
Question 1.
There are following number of poles of magnet
(a) one
(b) two
(c) three
(d) four.
Answer:
(b) two
Question 2.
Like poles
(a) repel each other
(b) attract each other
(c) sometimes repel and sometimes attract
(d) no effect at all.
Answer:
(a) repel each other
Question 3.
Unlike poles
(a) repel each other
(b) attract each other
(c) sometimes repel and sometimes attract
(d) no effect at all.
Answer:
(b) attract each other
Question 4.
A magnet is also called lodestone because
(a) it lifts load
(b) it is a stone
(c) it tells us direction
(d) none of these.
Answer:
(c) it tells us direction
Question 5.
Which of the following combination is of nonmagnetic materials?
(a) Plastic, wood, iron and paper
(b) Iron, nickel and cobalt
(c) Leather, iron, nickel and clothes
(d) Plastic, leather, clothes and paper
Answer:
(d) Plastic, leather, clothes and paper
Question 6.
A freely suspended magnet always aligns in
(a) north direction
(b) south direction
(c) east-west direction
(d) north-south direction.
Answer:
(d) north-south direction.
Question 7.
A magnet attracts
(a) iron, nickel, plastic
(b) book, pen, pencil
(c) bench, chair, cobalt
(d) nickel, iron, cobalt.
Answer:
(d) nickel, iron, cobalt.
Question 8.
A magnet made by man is called
(a) artificial magnet
(b) natural magnet
(c) either (a) or (b)
(d) none of these.
Answer:
(a) artificial magnet
Question 9.
Which material is commonly used to demonstrate magnetic properties due to its strong attraction towards magnets?
(a) Aluminum
(b) Copper
(c) Iron
(d) Silver
Answer:
(c) Iron
Question 10.
The strength of a magnet is maximum at
(a) north pole
(b) south pole
(c) both (a) and (b)
(d) at the middle.
Answer:
(c) both (a) and (b)
Question 11.
A compass shows the direction of
(a) east
(b) north
(c) north-south
(d) west.
Answer:
(c) north-south
Question 12.
Which statement is true about non-magnetic materials?
(a) They include iron, nickel, and cobalt.
(b) They are attracted towards magnets.
(c) They are usually metals.
(d) They do not respond to magnets.
Answer:
(d) They do not respond to magnets.
Question 13.
Following are the evidences of pure magnet
(a) attraction
(b) repulsion
(c) sometimes attraction sometimes repulsion
(d) none of these.
Answer:
(b) repulsion
Question 14.
Which of the following is not a magnetic material ?
(a) stainless steel
(b) steel
(c) nickel
(d) iron
Answer:
(a) stainless steel
Question 15.
Which of the following items cannot be picked up by a magnet ?
(a) iron nails
(b) aluminium foils
(c) paper clips
(d) hair pins
Answer:
(b) aluminium foils
Question 16.
The poles of a magnet are located at its
(a) lower surface
(b) upper surface
(c) ends
(d) middle point
Answer:
(c) ends
Question 17.
A compass shows the direction of
(a) cast
(b) north
(c) north-south
(d) west
Answer:
(c) north-south
Question 18.
Magnetic can be protected against self-demagnetisation by keeping the two magnets
(a) with their similar poles on the same side and soft iron keeper in between
(b) with their opposite poles joined with soft iron keepers and a wooden piece in between the two
(c) at angles to each other
(d) over each other lengthwise.
Answer:
(b) with their opposite poles joined with soft iron keepers and a wooden piece in between the two
Question 19.
What will happen when the two magnets shown below are pushed towards each other?
(a) They will repel each other
(b) They will heaf up
(c) They will attract each other
(d) Nothing will happen
Answer:
(a) They will repel each other
Question 20.
Like poles :
(a) attract each other
(b) repel each other
(c) sometimes repel and sometimes attract
(d) no effect at all
Answer:
(b) repel each other
Question 21.
Which part of the following bar magnet has the weakest pull?
(a) A
(b) B
(c) C
(d) D
Answer:
(b) B
Question 22.
Which of these materials can be used to make at a temporary magnet ?
(a) a piece of iron
(b) a piece of paper
(c) a piece of wood
(d) a piece of plastic
Answer:
(a) a piece of iron
Assertion-Reason type Questions :
Directions (Q. No. 1 to 5): The question below consists of an Assertion (A) and a Reason (R). Use the following key to choose the appropriate answer.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
Question 1.
Assertion (A): Magnet that attracts materials like iron (Fe), nickel (Ni), cobalt (Co) are called magnetic materials.
Reason (R): Materials that are not attracted towards magnet are called non-magnetic materials.
Answer:
(b) Both A and R are true but R is not the correct explanation of A.
Question 2.
Assertion (A): There is only one pole of bar magnet.
Reason (R): A magnet has North (N) and South (S) pole.
Answer:
(d) A is false but R is true.
Question 3.
Assertion (A): Opposite poles of two magnets attract each other whereas similar poles repel one another.
Reason (R): A freely suspended magnet always aligns in North-South direction.
Answer:
(b) Both A and R are true but R is not the correct explanation of A.
Question 4.
Assertion (A): The process of making magnet from iron is natural method.
Reason (R): There are different shapes of magnet like bar magnet, horse-shoe magnet, ball or cylindrical ended magnet.
Answer:
(d) A is false but R is true.
Question 5.
Assertion (A): Substances having the property of attracting pieces of iron or some other magnetic substances are called magnets.
Reason (R): Magnetite is called natural magnet.
Answer:
(b) Both A and R are true but R is not the correct explanation of A.
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R).
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
(b) Both (A) and (R) are true and (R) is not the correct explanation of (A).
(c) (A) is true but (R) is false.
(d) (A) is false but (R) is true.
Question 1.
Assertion (A) : Bar magnets are kept in pairs with their unlike poles on the same side.
Reason : Magnets become weak if they are not stored properly.
Answer:
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
Question 2.
Assertion (A) : Materials that are not attracted towards magnet are called nonmagnetic.
Reason: Non-magnetic materials cannot be converted into magnets.
Answer:
(b) Both (A) and (R) are true and (R) is not the correct explanation of (A).
Question 3.
Assertion (A) : Every magnet, has a north pole and a south pole.
Reason : It is possible to have a magnet having only one pole.
Answer:
(c) (A) is true but (R) is false.
Question 4.
Assertion (A) : A freely suspended magnet always points in the east-west direction.
Reason : Like magnetic poles repel each other, unlike magnetic poles attract each other.
Answer:
(d) (A) is false but (R) is true.
Question 5.
Assertion (A):The door of a refrigerator remains tightly closed.
Reason : magnet used in refrigerator door keep it tightly closed.
Answer:
(a) Both (A) and (R) are true and (R) is the correct explanation of (A).
Fill in the Blanks :
Complete the following with a suitable word/ words:
1. Artificial magnets are made in different shapes such as _______ , and _______ .
Answer:
bar magnet, horseshoe magnet
2. The red end of a magnetic compass needle always points towards _______
Answer:
North
3. The Earth’s magnetic field is rather like that of a _______ magnet with its _______ pole in the northern hemisphere.
Answer:
bar, south
4. If a N -pole is used in the stroking method of magnetisation the end where the stroking begins is a _______ pole.
Answer:
north
5. The needle of a magnetic compass always points towards the _______ magnetic pole.
Answer:
Earth’s
6. If you move a magnet around a magnetic compass, the needle may _______ because of the magnet’s influence.
Answer:
deflect
7. _______ is used by Indians for navigation at sea.
Answer:
Matsya-yantra
8. A magnetic compass is usually a _______ box.
Answer:
small circular
9. A magnet has _______ poles.
Answer:
two
10. The substances having the property of attracting iron are known as _______ .
Answer:
magnets
11. Artificial magnets have _______ shapes .
Answer:
different
12. The materials which are non attractive towards a magnet are called _______ .
Answer:
non-magnetic
13. A compass shows the _______ .
Answer:
directions
14. _______ is the evidence of a magnet.
Answer:
Repulsion
15. The compass needle is also a _______.
Answer:
magnet
16. Crane that picks up iron from the junk yard uses _______.
Answer:
electrical magnet
17. Stickers, pin holders and pencil boxes have _______ fitted inside.
Answer:
magnets
18. The attraction of a magnet is strongest at its _______.
Answer:
poles
19. A _______ is an object that attracts other objects made of iron, cobalt or nickel.
Answer:
magnet
20. If a N -pole is used in the stroking method of magnetisation, the end where the stroking begins is a _______ pole.
Answer:
north
21. The south pole one magnet _______ the south pole of another magnet.
EXPLORING MAGNETS
Answer:
repels
22. The materials which are attracted towards a magnet are called _______. materials.
Answer:
magnetic
23. Strong magnets can be demagnetised by _______ .
Answer:
Hammerings
24. The end of a freely suspended magnet, which points towards the geographical south pole is _______.
Answer:
South pole
25. The materials which are non-attractive towards a magnet are called _______.
Answer:
hon-magnetic
26. Crane picks up iron from the junk food uses _______.
Answer:
electro-magnet
27. Stickers, pin holders and pencil boxes have _______ fixed inside
Answer:
magnets
True/False :
State ‘True (T) or False (F)’ against the following statements:
1. Repulsion is a sure test of magnetism.
Answer:
True
2. It is possible to obtain an isolated north pole of a magnet.
Answer:
False
3. Copper cannot be magnetised.
Answer:
True
4. A magnet loses its magnetism when heated strongly and kept it in the east-west direction.
Answer:
True
5. A compass is used to find direction.
Answer:
True
6. A wooden material can be magnetised.
Answer:
False
7. Poles of a bar magnet are located in the middle.
Answer:
False
8. Two poles of a magnet can be separated from each other.
Answer:
False
9. Lodestone is a natural magnet.
Answer:
True
10. Each magnet has two magnetic poles.
Answer:
True
11. Opposite poles of two magnets repel each other whereas similar poles attract one another.
Answer:
False
12. The compass has a dial with directions marked on it.
Answer:
True
13. A bar magnet has maximum strength in the middle.
Answer:
False
14. A bar magnet has three poles.
Answer:
True
15. The substances having the property of attracting iron are known as magnets.
Answer:
True
16. A non-magnetic substance is attracted by magnet.
Answer:
False
17. A freely suspended magnet always aligns in East-south direction.
Answer:
False
18. It is possible to obtain an isolated north pole of a magnet.
Answer:
False
19. Copper cannot be magnetised.
Answer:
True
20. A nickel wire is attracted by a magnet.
Answer:
False
21. Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Answer:
False
22. Gold is a non-magnetic material.
Answer:
True
23. A compass can be used to find EastWest direction at any place.
Answer:
True
24. Rubber is a magnetic material.
Answer:
False
25. Repulsion is a sure test of magnetism.
Answer:
True
26. A magnet loses its magnetism when heated strongly and kept in the eastwest direction.
Answer:
True
27. A compass needle is a magnet.
Answer:
True
Match the Following :
Match the items given in column A with those given in column B.
| Column A | Column B |
| (a) Poles of a bar magnet are present | (i) Magnetic |
| (b) The rock that attracts iron pieces | (ii) Nickel and cobalt |
| (c) The materials that get attracted towards a magnet | (iii) At the ends |
| (d) Except iron, these materials are also magnetic | (iv) North-South |
| (e) A freely suspended bar magnet always comes to rest in the direction | (v) Repel each other |
| (f) Similar poles when brought near to each other | (vi) Lodestone |
Answer:
| Column A | Column B |
| (a) Poles of a bar magnet are present | (iii) At the ends |
| (b) The rock that attracts iron pieces | (vi) Lodestone |
| (c) The materials that get attracted towards a magnet | (i) Magnetic |
| (d) Except iron, these materials are also magnetic | (ii) Nickel and cobalt |
| (e) A freely suspended bar magnet always comes to rest in the direction | (iv) North-South |
| (f) Similar poles when brought near to each other | (v) Repel each other |
Quiz Time :
Question 1.
What is lodestone?
Answer:
A natural magnet
Question 2.
What is magnet?
Answer:
The substances having the property of attracting iron, nickel or cobalt are called magnets.
Question 3.
How can you determine north and south poles of a bar magnet?
Answer:
By suspending magnet
Question 4.
Name three magnetic materials.
Answer:
Iron, nickel and cobalt.
Question 5.
How many poles a bar magnet has? What are their names?
Answer:
Each magnet has two magnetic polesNorth and South.
Question 6.
If a magnet is freely suspended, what alignment will it take?
Answer:
A freely suspended magnet always aligns in North (N)-South(S) direction.
Question 7.
When does a magnet lose its magnetic property?
Answer:
A magnet loses its property when heated, hammered or dropped from a height.
Question 8.
What is the use of a compass?
Answer:
Compass is used to find direction usually by travellers.
Self-Assessment :
Question 1.
A magnet is also called lodestone because
(a) it lifts load
(b) it is a stone
(c) it tells us direction
(d) none of these.
Question 2.
Which of the following combination is of non-magnetic materials?
(a) Plastic, wood, iron and paper
(b) Iron, nickel and cobalt
(c) Leather, iron, nickel and clothes
(d) Plastic, leather, clothes and paper
Question 3.
A compass shows the direction of
(a) east
(b) north
(c) north-south
(d) west.
Question 4.
Assertion (A): There is only one pole of bar magnet. Reason (R): A magnet has North (N) and South (S) pole.
(a) Both A and R are true and R is the correct explanation of A .
(b) Both A and R are true but R is not the correct explanation of A .
(c) A is true but R is false.
(d) A is false but R is true.
Question 5.
Match the items in column A with those in column B.
| Column A | Column B |
| (i) Magnetic Materials | (a) Rubber |
| (ii) Non-Magnetic Materials | (b) Iron |
| (iii) South Pole | (c) Area around a magnet |
| (iv) Magnetic Field | (d) Attracts North Pole |
(A) (i)-(b), (ii)-(a), (iii)-(d), (iv)-(c)
(B) (i)-(a), (ii)-(b), (iii) -(c),(iv)-(d)
(C) (i)-(d),(ii)-(b),(i i i)-(c),(iv)-(a)
(D) (i)-(d),(ii)-(a),(iii)-(b),(iv)-(c)
Question 6.
Write two types of magnets.
Question 7.
Write some ekamples of non-magnetic materials.
Question 8.
Where is a magnet used in your refrigerators?
Question 9.
Where is the strength of a magnet the least?
Question 10.
Why is a magnet called lodestone?
Question 11.
Write two properties of a magnet.
Question 12.
How magnetic compass works?
Question 13.
Why it is said that repulsion is the sure evidence of a magnet?
Question 14.
Write some uses of magnet.
Question 15.
Write a few cautions to save the properties of magnet.
Question 16.
State whether the following statements are true or false:
(i) Like poles of a magnet repel each other.
(ii) Plastic and wood are the magnetic substances.
(iii) Mud and earthen pot clay are non-magnetic substances.
Question 17.
Fill in the blanks:
(i) Paper is not a ______ material.
(ii) A magnet always has ______ poles.
(iii) Stapler pins and alpins are non-magnetic in nature.
Question 18.
Explain the preparation of a magnet from an iron strip.
Question 19.
How can you make your own magnet?
Question 20.
What is compass?
Question 21.
How will you make your magnet?
Question 22.
Write an activity to show the evidence of a magnet.
Question 23.
A bar magnet has no markings to indicate its poles. How would you identify near which end is its north pole located?