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question_answer1)
Read the following table and answer the questions from.
P | Q | R |
Magnets | Magnetic substances | Non-magnetic substances |
Articles from which of these groups can be attracted by magnets but cannot attract other objects?
A)
P done
clear
B)
Q done
clear
C)
R done
clear
D)
P and Q done
clear
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question_answer2)
Read the following table and answer the questions from.
P | Q | R |
Magnets | Magnetic substances | Non-magnetic substances |
A few examples of substances are given below.
To which group do they belong?
A)
P done
clear
B)
Q done
clear
C)
R done
clear
D)
P and R done
clear
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question_answer3)
Read the following table and answer the questions from.
P | Q | R |
Magnets | Magnetic substances | Non-magnetic substances |
After repeated rubbing with a magnet in the same direction, a piece of substance fails to get magnetized. To which group does it belong?
A)
P and Q done
clear
B)
Q and R done
clear
C)
Q done
clear
D)
R done
clear
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question_answer4)
Read the following table and answer the questions from.
P | Q | R |
Magnets | Magnetic substances | Non-magnetic substances |
Articles from which of these group(s) can be attracted by a magnet?
A)
Only P and Q done
clear
B)
Only Q and R done
clear
C)
Only Q done
clear
D)
R done
clear
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question_answer5)
Read the following table and answer the questions from.
P | Q | R |
Magnets | Magnetic substances | Non-magnetic substances |
An object is repelled by a magnet. To which group does it belong?
A)
P done
clear
B)
Q done
clear
C)
R done
clear
D)
Q and R done
clear
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question_answer6)
Read the following table and answer the questions from.
P | Q | R |
Magnets | Magnetic substances | Non-magnetic substances |
To which group does a ring made up of copper belong?
A)
P done
clear
B)
Q done
clear
C)
R done
clear
D)
Either Q or P done
clear
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question_answer7)
What is a natural magnet known as?
A)
Toroid done
clear
B)
Lodestone done
clear
C)
Haematite done
clear
D)
Solenoid done
clear
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question_answer8)
Which of the following are magnetic materials?
(i) Steel |
(ii) Nickel |
(iii) Aluminium |
A)
Only (i) and (ii) done
clear
B)
Only (ii) and (iii) done
clear
C)
Only (i) and (iii) done
clear
D)
(i), (ii) and (iii) done
clear
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question_answer9)
Which of the following statements is true?
A)
The north pole of a magnet will attract the north pole of another magnet. done
clear
B)
Artificial magnets can be made from non-magnetic materials also. done
clear
C)
Lodestone is an artificial magnet. done
clear
D)
Isolated magnetic poles do not exist. done
clear
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question_answer10)
Where is the force of attraction of a magnet the maximum?
A)
At all sides done
clear
B)
All over the magnet done
clear
C)
At its poles done
clear
D)
At its centre done
clear
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question_answer11)
In which direction does a magnet always point when suspended freely?
A)
South-West done
clear
B)
North-South done
clear
C)
East-West done
clear
D)
West-South done
clear
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question_answer12)
Where does a compass work?
A)
Only in oceans or seas done
clear
B)
Only on land, where the earth's magnetic field is strong done
clear
C)
Only on high mountains done
clear
D)
At all the places within the earth's magnetic field done
clear
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question_answer13)
What is the special property of magnetic substances?
A)
They are repelled by magnets. done
clear
B)
They are attracted by magnets. done
clear
C)
They are both attracted and repelled by magnets. done
clear
D)
They cannot be made into magnets. done
clear
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question_answer14)
Study the given statements.
(i) A compass is use d to show the directions. |
(ii) The needle of a compass is magnetic. |
(iii) The needle of a compass always indicates the north and the south directions of the earth. |
Identify the correct statements.
A)
Only (i) and (ii) done
clear
B)
Only (ii) and (iii) done
clear
C)
Only (i) and (iii) done
clear
D)
All the three done
clear
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question_answer15)
Rakesh has one bar magnet, two iron pieces and all of them are of the same size and shape. Which of the following can be used for identifying them?
(i) Another magnet |
(ii) A compass |
(iii) A piece of thread |
A)
Only (i) and (ii) done
clear
B)
Only (ii) and (iii) done
clear
C)
Only (i) and (iii) done
clear
D)
All the three done
clear
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question_answer16)
Which of the following will NOT be attracted by a magnet?
A)
Iron done
clear
B)
Nickel done
clear
C)
Gold done
clear
D)
Cobalt done
clear
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question_answer17)
A How is a compass useful to us?
A)
In finding the altitude of a place done
clear
B)
In finding only the north of a place done
clear
C)
In finding all the directions of a place done
clear
D)
In making artificial magnets done
clear
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question_answer18)
Soft iron pieces are placed across the ends of bar magnets when stored. What are such pieces called?
A)
Preservatives done
clear
B)
Keepers done
clear
C)
Compasses done
clear
D)
Poles done
clear
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question_answer19)
Nikhilesh has a small piece of metal and a thread. He wants to find whether the metal is a magnet or not. Which of these things would he need?
A)
A piece of magnetic substance done
clear
B)
A magnet or a compass done
clear
C)
A piece of non-magnetic substance done
clear
D)
He does not require anything more done
clear
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question_answer20)
Harish was asked to identify a piece of soft iron put in a basket of 10 magnets of the same shape and size. Which is the easiest way of identifying the iron piece at the earliest?
A)
By suspending the magnets one at a time done
clear
B)
By conducting repulsion test using any two magnets at a time done
clear
C)
By bringing another strong magnet near the basket done
clear
D)
By dropping all magnets into the water done
clear
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question_answer21)
Which of the following ways will NOT cause a magnet to lose its magnetism?
A)
Heating it strongly over a flame done
clear
B)
Dropping it on the floor repeatedly done
clear
C)
Coating it with a layer of oil done
clear
D)
Hitting it with a hammer repeatedly done
clear
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question_answer22)
Bhavya placed a magnet near a metal ball and observed that the ball moved away. What does she conclude about the metal ball?
A)
It is a magnet. done
clear
B)
It is made up of aluminium. done
clear
C)
It is made up of copper. done
clear
D)
It is not a magnet. done
clear
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question_answer23)
Two magnets are placed close to each other as shown below. Which set will attract each other?
A)
B)
C)
D)
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question_answer24)
For which of the following purposes is a compass used?
(i) For alignment along N-S direction |
(ii) To find the direction at sea |
(iii) To identify magnetic materials |
A)
Only (i) and (ii) done
clear
B)
Only (ii) and (iii) done
clear
C)
Only (i) and (iii) done
clear
D)
(i), (ii) and (iii) done
clear
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question_answer25)
Why should we pivot the compass needle on a sharp pin?
A)
To minimize the magnetic effect on the pin done
clear
B)
To maximize the magnetic effect on the pin done
clear
C)
To minimize the friction between the pin and the compass needle done
clear
D)
To ensure that the compass needle will not drop from the pivoted point done
clear
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question_answer26)
Why does a compass always point to the north direction?
A)
The compass is made up of a magnetic material. done
clear
B)
The compass is a magnet with the pointer seeking the south pole of the earth. done
clear
C)
The compass is a magnet with the pointer seeking the north pole of the earth. done
clear
D)
The compass is an electromagnet that is charged by rubbing. done
clear
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question_answer27)
Which of the following diagrams shows magnetic repulsion?
A)
B)
C)
D)
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question_answer28)
In which of the following is a magnet used?
A)
Pin holder done
clear
B)
Plastic toy done
clear
C)
Car bumper done
clear
D)
Glass tumbler done
clear
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question_answer29)
Which of the following does NOT contain a magnet in it?
A)
A torch done
clear
B)
A radio done
clear
C)
A fan done
clear
D)
Both (B) and (C) done
clear
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question_answer30)
In many household articles, magnets in the lids/covers are present. Why are magnets used in such instances?
A)
To facilitate their frequent usage done
clear
B)
To ensure safety of the contents done
clear
C)
To make the articles airtight done
clear
D)
To make the articles look beautiful done
clear
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question_answer31)
Which of the following objects is/are magnetic?
A)
A nickel coin done
clear
B)
A brass screw done
clear
C)
An iron nail done
clear
D)
Both (A) and (C) done
clear
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question_answer32)
Which of the following objects do NOT make use of a magnet?
A)
B)
C)
D)
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question_answer33)
A magnet in the form of a cube is placed on a piece of cork that floats on water. The cube is marked with four directions. W, X, Y and Z and the compass needle which points in the direction as shown in the figure.
Which of the following denotes the N - pole and S - pole of the magnet?
A)
B)
C)
D)
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question_answer34)
A weak magnet Y is placed near a strong magnet X as shown in the figure.
How will the magnets move?
A)
Y will move away. done
clear
B)
X will turn in clockwise direction. done
clear
C)
Y will turn in anti-clockwise direction. done
clear
D)
Both X and Y will turn clockwise. done
clear
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question_answer35)
Which of the following figures does NOT show the poles correctly?
A)
B)
C)
D)
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question_answer36)
Satish magnetized a piece of iron marked W, X/Y and Z using the stroking method as shown in the figure.
Which of these parts of the iron piece will become the north-seeking pole?
A)
W done
clear
B)
X done
clear
C)
Y done
clear
D)
Z done
clear
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question_answer37)
Ganeshan set up an experiment using two bar magnets one of which is marked N (North pole) and S (South pole) as shown in the figure. He noticed that the upper magnet is suspended in air.
Identify X and Y poles of the upper magnet.
A)
X is the North Pole, Y is the South Pole. done
clear
B)
X is the South Pole, Y is the North Pole. done
clear
C)
Both X and Y are north poles. done
clear
D)
Both X and Y are south poles. done
clear
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question_answer38)
Vishnu brings a magnet near 3 pins made up of different materials. Pins Y and Z get attracted whereas pin X remains in its places as shown below.
What materials are pins X 'Y' and T made up of?
A)
B)
C)
D)
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question_answer39)
Which of the following is the correct method to prevent magnets from losing; their magnetism?
A)
B)
C)
D)
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question_answer40)
Which of the following shapes of a magnet are possible?
A)
Only P and Q done
clear
B)
Only Q and R done
clear
C)
Only R and P done
clear
D)
P, Q and R done
clear
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