CBSE Questions for Class 6 Physics Fun With Magnets Quiz 5 - MCQExams.com

Which of the following is correct about magnetic monopole?
  • Magnetic monopole exist
  • Magnetic monopole does not exist
  • Magnetic monopole have constant value of monopole momentum
  • The monopole momentum increase due to increase at its distance from the field
A magnet can be completely demagnetized by which one of the following processes?
  • Breaking the magnet into small pieces
  • Heating it slightly
  • Applying a reverse field of appropriate strength
  • Dropping it into ice cold water
Observe the pictures $$A$$ and $$B$$ given in the figure carefully.
Which of the following statement is correct for the given pictures?

1787937_41abc21e42af4bb293b236e3f9970f3f.png
  • In $$A$$, cars $$1$$ and $$2$$ will come closer and in $$B$$, cars $$3$$ and $$4$$ will come closer.
  • In $$A$$, cars $$1$$ and $$2$$ will move away from each other and in $$B$$, cars $$3$$ and $$4$$ will move away.
  • In $$A$$, cars $$1$$ and $$2$$ will move away and in $$B$$, $$3$$ and $$4$$ will come closer to each other.
  • In $$A$$, cars $$1$$ and $$2$$ will come closer to each other and in $$B$$, $$3$$ and $$4$$ will move away from each other.
Which action will not magnetise a rod?
  • Placing a copper rod inside a coil carrying a direct current
  • Stroking a steel rod with a permanent magnet
  • Hammering a steel rod aligned with the Earth's magnetic field
  • Placing a soft-iron rod close to a permanent magnet
A magnet can induce magnetism in
  • brass
  • aluminium
  • glass
  • steel
The material which is not suitable for making a permanent magnet is
  • Steel
  • Ticonal
  • Lead
  • Alnico
In which pair are both materials magnetic?
  • Aluminium and Copper
  • Copper and Iron
  • Iron and Steel
  • Steel and Aluminium
Write true or false for the following statement.
A magnet can attract only a magnetic substance.
  • True
  • False
A magnet is placed in iron powder and then taken out, then maximum iron powder is at
  • North pole only
  • South pole only
  • The middle of the magnet
  • The ends of the magnet
Write true or false for each statement.
Magnetic poles occur in pairs.
  • True
  • False
If a piece of metal was thought to be a magnet, which one of the  following observations would offer conclusive evidence
  • It attracts a known magnet
  • It repels a known magnet
  • Neither (a) nor (b)
  • It attracts a steel screw driver
Which one of the following is a non-magnetic substance  
  • $$ Iron $$
  • $$ Nickel $$
  • $$ Cobalt $$
  • $$ Brass $$
Magnets cannot be made from which of the following substances 
  • Iron
  • Nickel
  • Copper
  • All of the above
The presence of the magnetic field at a point can be detected by:
  • A strong magnet 
  • A solenoid
  • A compass needle 
  • A current-carrying wire
When a magnet is suspended freely in air with the help of string, it aligns itself in direction.
  • South - West
  • North - East
  • East - West
  • North - South
Which of the following is a non-magnetic material?
  • Nickel
  • Wood
  • Iron
  • Cobalt
Lisa did an experiment to find out which part of the magnet attracts the most pins. Which of these readings is correct?
Number of pins attracted by the part of the magnet
P Q R S
794056_dff0758fe29e40068418e7bf4e8f3810.JPG
  • 8 1 2 8
  • 8 3 3 2
  • 3 2 3 8
  • 1 8 8 1
The best way to separate a mixture of sand and iron filings is by the method of:
  • filtration
  • sedimentation
  • magnetic separation
  • using a compass

Seema had heard that rainwater is as good as distilled water. So she collected some rainwater in a clean glass tumbler and tested it using a tester. To her surprise, she found that the compass needle showed deflection. What could be the reasons?
  • Glass is magnetic in nature
  • Rainwater is contaminated by impurities suspended in the atmosphere 
  • Distilled water is magnetic in nature
  • None of these
The sure test of a magnet is:
  • Magnetic attraction
  • magnetic repulsion
  • both (a) and (b)
  • none of these
The needle of the compass is made of a magnet because it _______
(i) Attracts metal like iron and steel.
(ii) Gets deflected when a magnet is brought near to it
(iii) Comes to rest in East-West direction
(iv) Comes to rest in a North-South direction
Which of the above statements correctly fill the blank?
  • (i) & (ii)
  • (i), (ii) & (iv)
  • (ii) & (iv)
  • (ii) only.
An electromagnet does not attract a piece of iron.
  • True
  • False
When a magnet is placed on a plastic plate with common pins spread on it, then:
  • Pins stick all around the magnet
  • Pins stick at the middle of the magnet
  • Pins stick at the ends of the magnet
  • Pins do not stick at all.
  • None of the above
Look at the classification table below.
Which of the following correctly describes X, Y and Z?

794054_edd85f0ab85348de9d1b8eea02b63da2.png
  • Metals; Can sink; Can float
  • Metals; Can be magnetised;  Cannot be magnetised
  • Metals; Cannot be attracted by magnet; Can be attracted by magnets
  • Metals: Can allow electricity to pass through: Cannot allow electricity to pass through
Deposits of magnetic oxide iron ore is called 
  • Magnetite
  • Magnetic
  • Magnesite
  • Both (A) and (B)
Simon stroked $$4$$ different nails with a bar magnet according to the direction of the arrows. Which nail will be magnetised ?
Which of the following is not attracted by a magnet?
  • Steel
  • Cobalt
  • Brass
  • Nickel
The end of the magnet that points towards North is called its ______.
  • North seeking
  • South Pole
  • South seeking
  • North Pole
A freely suspended bar magnet always comes to rest in a random direction
  • True
  • False
What did the emperor in China have which had an interesting property of magnets?
  • A chariot with a statue of a lady that could rotate in any direction.
  • A dog tied to the chariot
  • Tea garden
  • Nothing
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