-
question_answer1)
The lodestone is a
A)
temporary magnet done
clear
B)
artificial magnet done
clear
C)
natural magnet done
clear
D)
None of these done
clear
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question_answer2)
The magnets which retain their magnetic properties only over a short interval of time are called
A)
natural magnet done
clear
B)
artificial magnet done
clear
C)
permanent magnet done
clear
D)
temporary magnet done
clear
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question_answer3)
Magnetic compass
A)
always points in N-S direction done
clear
B)
used to find directions done
clear
C)
is a magnet done
clear
D)
all of these done
clear
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question_answer4)
Two like poles of magnets always
A)
repel each other done
clear
B)
attract each other done
clear
C)
sometimes repel sometimes attract each other done
clear
D)
cann't say done
clear
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question_answer5)
When two magnets are stored with North Pole alongside the North of the other magnet for a long time.
A)
its magnetic property increases done
clear
B)
its magnetic property decreases done
clear
C)
its magnetic property remains same done
clear
D)
none of these done
clear
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question_answer6)
A piece of iron should place across the poles of horse shoe magnet
A)
to conserve its magnetic property done
clear
B)
to increase its magnetic property done
clear
C)
to make it demagnetise done
clear
D)
to decrease its magnetic property done
clear
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question_answer7)
When we break a magnet into pieces, each piece having
A)
North Pole only done
clear
B)
South Pole only done
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C)
both North and South Poles done
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D)
None of these done
clear
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question_answer8)
Shapes of natural magnets are.......
A)
horse-shoe done
clear
B)
irregular done
clear
C)
cylindrical done
clear
D)
regular done
clear
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question_answer9)
The attractive property of magnet was discovered by
A)
Indians done
clear
B)
Chinese done
clear
C)
Greeks done
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D)
Japanese done
clear
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question_answer10)
................. is the surest test of magnetism.
A)
Attraction done
clear
B)
Rotation done
clear
C)
Repulsion done
clear
D)
None of these done
clear
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question_answer11)
Which of the following gets demagnetised when a powerful magnet is kept near it?
A)
Plastic ruler done
clear
B)
Compact disc done
clear
C)
Glass tumbler done
clear
D)
Wood done
clear
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question_answer12)
Magnetism of a magnet is lost by
A)
keeping in a box done
clear
B)
heating done
clear
C)
hammering done
clear
D)
Both (b) and (c) done
clear
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question_answer13)
Which of the following does not get demagnetised when a powerful magnet is kept near it?
A)
compact disc done
clear
B)
iron container done
clear
C)
cell phone done
clear
D)
comb done
clear
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question_answer14)
A device used by pilots and navigators to find the direction is
A)
barometer done
clear
B)
thermometer done
clear
C)
magnetic compass done
clear
D)
none of these done
clear
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question_answer15)
The two poles of any magnet are
A)
east pole and west pole done
clear
B)
north pole and south pole done
clear
C)
north pole and west pole done
clear
D)
south pole and east pole done
clear
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question_answer16)
A natural magnet has
A)
only one pole done
clear
B)
two poles done
clear
C)
can't say done
clear
D)
unlimited number of poles done
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question_answer17)
A freely suspended magnet always rests in
A)
north-south direction done
clear
B)
south-north direction done
clear
C)
east-west direction done
clear
D)
Both (a) and (b) are correct done
clear
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question_answer18)
The pole of a freely suspended magnet that points towards north direction is called
A)
north seeking end done
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B)
south seeking end done
clear
C)
east seeking end done
clear
D)
west seeking end done
clear
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question_answer19)
A magnet attracts which of the following metals?
A)
Iron done
clear
B)
Cobalt done
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C)
Nickel done
clear
D)
All of these done
clear
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question_answer20)
Which of the following are magnetic materials?
A)
Iron done
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B)
Cobalt done
clear
C)
Nickel done
clear
D)
All of these done
clear
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question_answer21)
Which of the following are a group of non- magnetic materials?
A)
Plastic and wood done
clear
B)
Wood and iron done
clear
C)
Iron and cobalt done
clear
D)
Plastic and nickel done
clear
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question_answer22)
A magnetic compass is a device that is used to show
A)
time done
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B)
mass done
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C)
temperature done
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D)
direction done
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question_answer23)
The part of magnetic needle of magnetic compass that points towards north is generally coated with
A)
white colour done
clear
B)
blue colour done
clear
C)
red colour done
clear
D)
None of these done
clear
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question_answer24)
From a heap of sand and small iron pieces which method would you use to separate iron pieces from the heap?
A)
Hand picking done
clear
B)
By using a magnet done
clear
C)
Either of the two done
clear
D)
None of these two done
clear
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question_answer25)
A magnet is likely to loose its magnetic properties when
A)
it is wrapped in cotton wool done
clear
B)
it is struck with a hammer done
clear
C)
it is kept in a cool room done
clear
D)
None of the above is correct done
clear
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question_answer26)
You are advised not to store your floppy disk near a magnet because
A)
it may cause your magnet to rust done
clear
B)
it may make you magnet weaker done
clear
C)
it may erase the information stored in your disk done
clear
D)
it may break your disk done
clear
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question_answer27)
Which part of a bar magnet will attract the maximum number of iron nails when it is brought near a heap of iron nails?
A)
North pole done
clear
B)
South pole done
clear
C)
Middle portion done
clear
D)
Near both poles done
clear
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question_answer28)
Many household appliances contain magnet in them. Which of the following does not contain a magnet in it?
A)
Radio done
clear
B)
Fan done
clear
C)
Refrigerator done
clear
D)
Torch done
clear
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question_answer29)
Which part of a magnetic compass can rotate freely?
A)
The metal box done
clear
B)
The glass cover on metal box done
clear
C)
The magnetic needle done
clear
D)
The dial done
clear
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question_answer30)
Which of the following is a magnetic element?
A)
Copper done
clear
B)
Aluminium done
clear
C)
Cobalt done
clear
D)
Zinc done
clear
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question_answer31)
Following are some of the operations performed on magnet. Which of these can demagnetise the given magnet? Heating Hammering Keep it in close contact with another magnet is such away, that like poles are together Keeping it in water
A)
(1), (2) and (4) done
clear
B)
(1), (3) and (4) done
clear
C)
(1), (2) and (3) done
clear
D)
(2), (3) and (4) done
clear
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question_answer32)
Which of the following statement(s) is/are correct?
A)
A freely suspended bar magnet always points in East-North direction. done
clear
B)
Glass is not a magnetic substance done
clear
C)
Plastic is a magnetic substance done
clear
D)
All the above are correct done
clear
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question_answer33)
Which of the following statement(s) is/are correct?
A)
A magnetic needle used in compass is not a magnet done
clear
B)
The dial of a compass can rotate freely done
clear
C)
One end of the magnetic needle of compass is generally painted with red colour done
clear
D)
All the above are correct done
clear
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question_answer34)
One end of magnetic needle in the magnetic compass is coloured red. This end of the needle always points
A)
towards south done
clear
B)
towards north done
clear
C)
towards east done
clear
D)
towards west done
clear
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question_answer35)
A rock is known as a natural magnet. The rock contains iron. The rock is called
A)
Magnes done
clear
B)
Magnesia done
clear
C)
Magnetite done
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D)
None of these done
clear
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question_answer36)
Magnetic pole
A)
a point in a bar magnet where magnetic forces are strongest done
clear
B)
the central point of a bar magnet where the magnetic forces are least done
clear
C)
Both the above are correct done
clear
D)
None of the above is correct done
clear
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question_answer37)
Why are cobalt, nickel and iron called magnetic substances?
A)
They can be converted into any shape by heating. done
clear
B)
They get attracted by a magnet. done
clear
C)
They get repelled by a magnet. done
clear
D)
None of the above is correct. done
clear
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question_answer38)
DIRECTIONS: Match Column=I with Column-II and select the correct answer using the codes given below the columns.
Column-I | Column-II |
A. North-seeking pole | (p) Pole of a freely suspended magnet which points to south. |
B. South-seeking pole | (q) cannot exists independently. |
C. Electromagnet | (r) Pole of a freely suspended magnet which points to north. |
D. Magnetic poles | (s) are used to lift heavy weights. |
A)
\[A\to (p);B\to (q);C\to (r);D\to (s)\] done
clear
B)
\[A\to (p);B\to (r);C\to (q);D\to (s)\] done
clear
C)
\[A\to (s);B\to (p);C\to (r);D\to (q)\] done
clear
D)
\[A\to (r);B\to (p);C\to (s);D\to (q)\] done
clear
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question_answer39)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 A shepherd named magnes lived in Greece used to take his herd of sheeps and goats on a mountain for grazing. He always carried a stick to control his herd. The stick had a small piece of iron attached to one end. One day he had to pull hard to free his stick from a rock on the mountain side. Why has magnes to pull hard to free his stick from a rock on the mountain side on that particular day?
A)
His stick was stuck in the bushes on the mountain. done
clear
B)
He was holding his stick in such a way that the portion of stick having small piece of iron attached was held by him in his hand. done
clear
C)
The portion of stick having iron piece attached to it was pointing towards rock and get attracted strongly by the rock done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer40)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 A shepherd named magnes lived in Greece used to take his herd of sheeps and goats on a mountain for grazing. He always carried a stick to control his herd. The stick had a small piece of iron attached to one end. One day he had to pull hard to free his stick from a rock on the mountain side. The credit for the discovery of natural magnet goes to
A)
Mendes done
clear
B)
Mendel done
clear
C)
Magnes done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer41)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 A shepherd named magnes lived in Greece used to take his herd of sheeps and goats on a mountain for grazing. He always carried a stick to control his herd. The stick had a small piece of iron attached to one end. One day he had to pull hard to free his stick from a rock on the mountain side. Magnes lived in
A)
Ancient India done
clear
B)
Ancient China done
clear
C)
Egypt done
clear
D)
Ancient Greece done
clear
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question_answer42)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 One of the important property of magnet is that a freely suspended magnet always rests in the same direction (North-South). The freely suspended magnet always rests in
A)
east-west direction done
clear
B)
north-south direction done
clear
C)
west-north direction done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer43)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 One of the important property of magnet is that a freely suspended magnet always rests in the same direction (North-South). We want to find the exact direction at a place, to find this
A)
we can look at the rising sun at that place and then our face is in east direction, on our left will be north. done
clear
B)
we can use a magnetic compass and find the direction by looking at its dial. done
clear
C)
both the above methods give us an exact knowledge of the directions. done
clear
D)
None of the above is correct done
clear
View Solution play_arrow
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question_answer44)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 One of the important property of magnet is that a freely suspended magnet always rests in the same direction (North-South). One end of magnetic needle in the magnetic compass is coloured red. This end of the needle always points
A)
towards south done
clear
B)
towards north done
clear
C)
towards east done
clear
D)
towards west done
clear
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question_answer45)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other- labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: It is easier to bring North Pole of a magnet to South Pole of other magnet. Reason R: There is a force of attraction between unlike poles of magnet.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer46)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other- labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Tennis ball attracts towards a magnet Reason (R): Tennis balls is a non-magnetic object.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer47)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other- labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Iron is a non-magnetic substance. Reason (R): Iron is attracted towards a magnet.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer48)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other- labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: A magnet attracts cobalt. Reason (R): A horse shoe magnet is rectangular in shape.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
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question_answer49)
DIRECTIONS: Read the following two statements carefully and choose the correct options. Statement-1: A compass is a device used to find directions. Statement-2: Electromagnet is used to make a magnetic compass.
A)
Statement (1) is correct while statement (2) is incorrect. done
clear
B)
Statement (2) is correct while statement (1) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
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question_answer50)
DIRECTIONS: Read the following two statements carefully and choose the correct options. Statement-1: Magnetite is a naturally occurring mineral. Statement-2: Magnetite attracts magnetic material but the force of attraction is weak.
A)
Statement (1) is correct while statement (2) is incorrect. done
clear
B)
Statement (2) is correct while statement (1) is incorrect. done
clear
C)
Both statements are correct done
clear
D)
Both statements are incorrect. done
clear
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question_answer51)
A nail is magnetized as shown in the figure. Which polarity will develop at A and B?
A)
A - North, B-North done
clear
B)
A - North, B-South done
clear
C)
A - South, B ? South done
clear
D)
A - South, B-North done
clear
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question_answer52)
Some objects were classified into two groups as under. Group 1: Iron, graphite, silver Group 2: Rubber, plastics, wood The classification of objects has been done using which one of the following categories?
A)
Magnetic substances and non-magnetic substances done
clear
B)
Metals and non-metals done
clear
C)
Conductors and insulators done
clear
D)
All the above done
clear
View Solution play_arrow
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question_answer53)
Magnetite is
A)
a naturally occurring mineral done
clear
B)
an artificial magnet done
clear
C)
Both the above done
clear
D)
None of these done
clear
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question_answer54)
A magnet is also called lodestone because
A)
it can lift load done
clear
B)
it is like a stone done
clear
C)
it helps us to locate directions done
clear
D)
All the above are correct done
clear
View Solution play_arrow
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question_answer55)
Select the proper method for storage of bar magnets
A)
bar magnets should be kept in pairs done
clear
B)
bar magnets should be kept in pairs with their unlike poles on the same side done
clear
C)
bar magnets should be kept in pairs with their unlike poles on the opposite sides done
clear
D)
All the above are correct done
clear
View Solution play_arrow
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question_answer56)
The loss of magnetic properties by a magnet is called
A)
demagnetisation done
clear
B)
magnetisation done
clear
C)
dropping of magnet done
clear
D)
None of these done
clear
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question_answer57)
The making of magnet of an iron needle with the help of a magnet is called
A)
magnetisation done
clear
B)
demagnetisation done
clear
C)
method of demagnetisation of an iron needle done
clear
D)
None of the above is correct done
clear
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question_answer58)
Which of the following can be used to find if the given iron piece is a magnet?
A)
By trying to attract another magnet done
clear
B)
By trying to repel another magnet done
clear
C)
By bringing another piece of iron near to it done
clear
D)
By trying to attract small pieces of paper. done
clear
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question_answer59)
Identify the function of magnetic belt from the following.
A)
To mix iron objects to trash done
clear
B)
To melt iron objects from trash done
clear
C)
To separate iron objects from trash done
clear
D)
To repel magnetic substances done
clear
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question_answer60)
Which of the following statement(s) is/are correct?
A)
A magnetic substance when brought near the north pole of a bar magnet gets attracted towards it done
clear
B)
A magnetic substance when brought near the south pole of a bar magnet gets attracted towards it done
clear
C)
A magnetic substance when brought near the middle of a bar magnet gets attracted towards it done
clear
D)
All the above are correct done
clear
View Solution play_arrow
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question_answer61)
Which of the following statement(s) is/are correct?
A)
A bar magnet loses its magnetic properties to a large extent if it is dropped from some height done
clear
B)
A bar magnet that has been demagnetized can be again converted into a magnet done
clear
C)
Both the above are correct done
clear
D)
None of these are correct done
clear
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question_answer62)
Which of the following features will you observe in the needle of compass? it will attract metals it will show a deflection if a magnet is brought near it it will always come to rest in east-west direction it will always come to rest in north-south direction
A)
and (ii) done
clear
B)
(i), (ii) and (iii) done
clear
C)
(ii) and (iv) done
clear
D)
(ii) only done
clear
View Solution play_arrow
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question_answer63)
North pole of a magnet is
A)
that pole of the magnet which points in north direction when the magnet is freely suspended done
clear
B)
that pole of the magnet which is known as north seeking end when magnet is freely suspended done
clear
C)
that pole of the magnet which is attracted towards the south pole of earth's magnet done
clear
D)
All the above are correct done
clear
View Solution play_arrow
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question_answer64)
A compass
A)
is a device used by navigators to find the directions at a place done
clear
B)
is a device that makes use of a magnetic needle to locate the directions at a place done
clear
C)
Both the above are correct done
clear
D)
None of these are correct done
clear
View Solution play_arrow
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question_answer65)
The number of magnetic poles in a horse shoe magnet is/are
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer66)
How many ends of a magnetic needle are painted red?
A)
1 done
clear
B)
2 done
clear
C)
3 done
clear
D)
4 done
clear
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question_answer67)
When a magnet is placed on a plastic plate with common pins spread on it, then maximum number of pins stick
A)
at the middle of the magnet done
clear
B)
at the ends of the magnet done
clear
C)
all around the magnet done
clear
D)
None of these done
clear
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question_answer68)
Which of the following is not a non-magnetic substance?
A)
Glass done
clear
B)
Wood done
clear
C)
China ware done
clear
D)
Nickel done
clear
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question_answer69)
Which of the following cannot be used to make a magnet?
A)
Cobalt done
clear
B)
Iron done
clear
C)
Ebonite done
clear
D)
Steel done
clear
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question_answer70)
.................. is the natural magnet.
A)
Magnetite done
clear
B)
Ebonite done
clear
C)
Cobalt done
clear
D)
Nickel done
clear
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question_answer71)
What is our best evidence that Earth has a magnetic field?
A)
All things fall towards Earth's centre. done
clear
B)
All compass needle lines up with it. done
clear
C)
Winds blows from east to west. done
clear
D)
Earth's oceans have current. done
clear
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question_answer72)
How is earth's similar to that of a magnet?
A)
It has North and South poles done
clear
B)
It is hundreds of miles long. done
clear
C)
It is made in Earth's core. done
clear
D)
It is shaped like a horseshoe, done
clear
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question_answer73)
The North end of the freely suspended magnet points towards.............?
A)
geographical East done
clear
B)
geographical North done
clear
C)
geographical West done
clear
D)
geographical South done
clear
View Solution play_arrow
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question_answer74)
For an electromagnet to have a magnetic field
A)
It must be heated done
clear
B)
It has to be touching another magnet done
clear
C)
It must be lined up with Earth's magnetic field done
clear
D)
It must be connected to an electrical source done
clear
View Solution play_arrow
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question_answer75)
Ancient people discovered magnetic rocks called lodestone. They use them
A)
to start fires done
clear
B)
for compasses done
clear
C)
for sculptures done
clear
D)
for telephone receivers done
clear
View Solution play_arrow
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question_answer76)
What characteristics do magnetic substances have?
A)
They can give a "shock" when you touch them. done
clear
B)
They can push or pull objects they are not touching, done
clear
C)
They are always black and cold to touch. done
clear
D)
They fall faster than other objects when you drop them. done
clear
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question_answer77)
Magnet which is used in cranes to lift heavy containers from ships is a/an
A)
bar magnet done
clear
B)
cylindrical magnet done
clear
C)
electromagnet done
clear
D)
horseshoe magnet done
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question_answer78)
Which of the following device using electro- magnet?
A)
Electric bell done
clear
B)
Ceiling fan done
clear
C)
Electric motor done
clear
D)
All of the above done
clear
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question_answer79)
DIRECTION: Match Column-I with Column-Hand, columns.
Column-I | Column-II |
A. Iron | (p) Can be magnetised easily |
B. Magnetite | (q) A magnetic material |
C. Aluminium | (r) A light metal that is not a magnetic material |
D. Nickel | (s) A natural magnet |
A)
\[A\to (p);B\to (q);C\to (r);D\to (s)\] done
clear
B)
\[A\to (s);B\to (r);C\to (q);D\to (p)\] done
clear
C)
\[A\to (p);B\to (s);C\to (r);D\to (q)\] done
clear
D)
\[A\to (r);B\to (q);C\to (p);D\to (s)\] done
clear
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question_answer80)
DIRECTION: Match Column-I with Column-Hand, columns.
Column - I | Column - II |
A. Magnets | (p) Occurs when a magnet is heated |
B. Horse shoe magnet | (q) Should be kept in pairs with their opposite poles on the same side. |
C. Bar magnet | (r) It is U-shaped |
D. Demagnetisation | (s) Must always be kept away from mobiles, T.V., Music system, computers, etc. |
A)
\[A\to (p);B\to (r);C\to (q);D\to (s)\] done
clear
B)
\[A\to (s);B\to (q);C\to (r);D\to (p)\] done
clear
C)
\[A\to (r);B\to (p);C\to (s);D\to (q)\] done
clear
D)
\[A\to (s);B\to (r);C\to (q);D\to (p)\] done
clear
View Solution play_arrow
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question_answer81)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 The trains that use magnets to float above a track is called Maglev (Magnetic Levitadon) trains. This trains work on the principle that like poles repel and unlike poles attract each other. Due to magnetic force of attraction and repulsion this vehicle moves in forward direction. This train does not require wheels. Maglev train floats above the guide way experiences very less friction does not require wheels
A)
only done
clear
B)
and (3) done
clear
C)
(3) only done
clear
D)
(1), (2) and (3) done
clear
View Solution play_arrow
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question_answer82)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 The trains that use magnets to float above a track is called Maglev (Magnetic Levitadon) trains. This trains work on the principle that like poles repel and unlike poles attract each other. Due to magnetic force of attraction and repulsion this vehicle moves in forward direction. This train does not require wheels. Maglev trains work on the principle that
A)
like poles repel each other done
clear
B)
unlike poles attract each other done
clear
C)
both (a) and (b) done
clear
D)
None of these done
clear
View Solution play_arrow
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question_answer83)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 The trains that use magnets to float above a track is called Maglev (Magnetic Levitadon) trains. This trains work on the principle that like poles repel and unlike poles attract each other. Due to magnetic force of attraction and repulsion this vehicle moves in forward direction. This train does not require wheels. What is used in Maglev trains instead of wheels?
A)
Bar magnets done
clear
B)
Horse shoe magnets done
clear
C)
Natural magnets done
clear
D)
Electromagnets done
clear
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question_answer84)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 You are provided with a soil and asked to find out if the given soil contains some magnetic substance or not? You rubbed a magnet in the soil and then pulled out the magnet. Your magnet appeared as shown below:
The soil provided to you
A)
contains magnetic substance done
clear
B)
does not contain any magnetic substance done
clear
C)
Both the above are correct done
clear
D)
None of the above is correct done
clear
View Solution play_arrow
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question_answer85)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 You are provided with a soil and asked to find out if the given soil contains some magnetic substance or not? You rubbed a magnet in the soil and then pulled out the magnet. Your magnet appeared as shown below:
The substance sticking to the magnet is
A)
iron done
clear
B)
cobalt done
clear
C)
nickel done
clear
D)
any magnetic substance done
clear
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question_answer86)
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 You are provided with a soil and asked to find out if the given soil contains some magnetic substance or not? You rubbed a magnet in the soil and then pulled out the magnet. Your magnet appeared as shown below:
When a magnet is brought near a heap of magnetic substance, the particles of magnetic substance will be attracted.
A)
attracted through out the length of bar magnet with the some force done
clear
B)
attracted more near north pole and less near south pole done
clear
C)
attracted more near south pole and less near north pole done
clear
D)
attracted more near the poles and less near the middle portion done
clear
View Solution play_arrow
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question_answer87)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Maglev is the train which does not require wheels. Reason (R): Maglev train experiences very less friction.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer88)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: Strength of electromagnet depends on the magnitude of current flowing through them. Reason (R): Electromagnets are used to lift heavy weights.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer89)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: The north pole of a freely suspended magnet points towards geographic north. Reason (R): Using pieces of iron we can make artificial magnets.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer90)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: A compass is a magnetic device that is used by sailors to find directions. Reason (R): The sailor can find directions by use of dial of magnetic compass even if there is no magnetic needle fixed in the compass.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer91)
DIRECTIONS: The questions in this segment consists of two statements, one labelled as ?Assertion A? and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: A simple magnetic compass can be prepared by inserting a magnetised iron needle in a piece of cork and allow the cork to float in water kept in a bowl. Reason (R): In the above arrangement the needle must touch water while floating.
A)
Both A and R are true and R is the correct explanation of A. done
clear
B)
Both A and R are true but R is not the correct explanation of A. done
clear
C)
A is true but R is false. done
clear
D)
A is false but R is true. done
clear
View Solution play_arrow
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question_answer92)
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement-1: Permanent magnet can never lose its magnetic property. Statement-2: Two magnets should never stored with like poles alongside for a long time. Statement-3: On heating magnetic property of a magnet increases.
A)
Statement (1) and (3) are incorrect while statement (2) is correct. done
clear
B)
Statement (1) and (2) are incorrect while (3) is correct. done
clear
C)
All the statements are correct. done
clear
D)
All the statements are incorrect. done
clear
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question_answer93)
Magnets A and B are of equal magnetic strength. In which position will magnets A and B have the greatest attractive force towards each other?
A)
B)
C)
D)
Cannot say done
clear
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question_answer94)
Letters A, B, C, and D represent locations on a bar magnet.
Which location has the greatest magnetic force?
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
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question_answer95)
The diagram below shows a bar magnet resting on top of a piece of white paper. The north and south poles of the magnet are labeled N and S. Points A, B, C, and D represent four locations around the magnet.
If iron filings were sprinkled evenly across the entire paper circle, at which location would the greatest concentration of iron filings be found after 30 seconds?
A)
A done
clear
B)
B done
clear
C)
C done
clear
D)
D done
clear
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question_answer96)
A student put five ring magnets on a pencil. The magnets are labeled 1,2, 3,4, and 5.
Which two magnets are attracting each other?
A)
1 and 2 done
clear
B)
2 and 3 done
clear
C)
3 and 4 done
clear
D)
4 and 5 done
clear
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question_answer97)
A magnet is freely suspended in air as shown in diagram and another magnet is brought near it as shown in the diagram. What will be observed?
A)
It will show repulsion done
clear
B)
It will show attraction done
clear
C)
Nothing will happen done
clear
D)
Can'(predict) done
clear
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question_answer98)
Choose the correct method for arranging three bar magnets.
A)
B)
C)
D)
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question_answer99)
Look at the figure showing iron pins being attracted towards nail in (ii) and tell which of the following is demonstrated by it?
A)
Pins get converted into artificial magnet in fig. (ii) done
clear
B)
Pins gets demagnetised in fig. (i) done
clear
C)
The iron nail becomes an artificial magnet in fig. (ii) done
clear
D)
None of the above occurs done
clear
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question_answer100)
The results of some observations about the number of iron pins attracted by a bar magnet are shown below. In your opinion which of the given reading are correct?
Number of pins attracted Observation A B C D (i) 10 2 2 10 (ii) 10 5 5 4 (iii) 6 6 6 6 (iv) 2 10 10 2
A)
(i) done
clear
B)
(ii) done
clear
C)
(iii) done
clear
D)
(iv) done
clear
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question_answer101)
The correct method of making an artificial magnet is
A)
as shown in fig. (i) done
clear
B)
as shown in fig. (ii) done
clear
C)
Both are correct done
clear
D)
None of these is correct done
clear
View Solution play_arrow
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question_answer102)
Why is the ring magnet P floating on ring magnet Q in the given figure?
A)
Magnet P is lighter as compared to magnet Q. done
clear
B)
Magnet Q is more powerful as compared to magnet P. done
clear
C)
Like poles of magnets P and Q are facing each other. done
clear
D)
Unlike poles of magnets P and Q are facing each other done
clear
View Solution play_arrow