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Test: Fun With Magnets - UPSC MCQ


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10 Questions MCQ Test - Test: Fun With Magnets

Test: Fun With Magnets for UPSC 2024 is part of UPSC preparation. The Test: Fun With Magnets questions and answers have been prepared according to the UPSC exam syllabus.The Test: Fun With Magnets MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Fun With Magnets below.
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Test: Fun With Magnets - Question 1
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The property of attracting iron or other magnetic materials is called

Detailed Solution for Test: Fun With Magnets - Question 1

Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges.

Test: Fun With Magnets - Question 2
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Which of the following is not a magnetic substance?

Detailed Solution for Test: Fun With Magnets - Question 2
  • Iron, nickel, and cobalt are known as ferromagnetic materials. They can be magnetized and exhibit strong magnetic properties.
  • These metals have unpaired electrons, which contribute to their magnetic behavior.
  • Silver, on the other hand, is classified as a diamagnetic material. It does not have unpaired electrons and does not exhibit magnetic properties.
  • Therefore, among the options, silver is the substance that is not magnetic.
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Test: Fun With Magnets - Question 3
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Lodestone is a

Detailed Solution for Test: Fun With Magnets - Question 3

A lodestone is a naturally magnetized piece of the mineral magnetite. They are naturally occurring magnets, which can attract iron. The property of magnetism was first discovered in antiquity through lodestones.

Test: Fun With Magnets - Question 4
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Which types of magnet have two poles close to each other?
Detailed Solution for Test: Fun With Magnets - Question 4

A horseshoe magnet is a magnet made in the shape of a horseshoe. At the ends of its legs, the magnet has two magnetic poles close together. This shape creates a strong magnetic field between the poles.


Fig: Horseshoe Magnet 

Test: Fun With Magnets - Question 5
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State whether the following statement is True or False

Magnets can attract pieces of iron.
Detailed Solution for Test: Fun With Magnets - Question 5
  • When you have a magnet, and you bring it close to some pieces of iron, like iron nails or paper clips, the pieces of iron will stick to the magnet. This is because magnets have special powers to attract iron objects.
  • So, the statement that says "Magnets can attract pieces of iron" is True.
Test: Fun With Magnets - Question 6
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How can you identify the north pole of a magnet if it is not marked?
Detailed Solution for Test: Fun With Magnets - Question 6
To identify the north pole of an unmarked magnet, you can use a compass. The end of the magnet that aligns with the north direction indicated by the compass is the north pole. This method is based on the fact that the north pole of a magnet is attracted to the Earth's magnetic North.
Test: Fun With Magnets - Question 7
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What happens if you heat a magnet?
Detailed Solution for Test: Fun With Magnets - Question 7
Heating a magnet causes it to become weaker. High temperatures can disrupt the alignment of the magnetic domains within the magnet, reducing its magnetic strength. This is why magnets should be kept away from heat sources to maintain their effectiveness.
Test: Fun With Magnets - Question 8
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What is a common characteristic of materials that are attracted to magnets?
Detailed Solution for Test: Fun With Magnets - Question 8
Materials that are attracted to magnets typically contain iron, nickel, or cobalt. These materials are magnetic, meaning they can be attracted by a magnet due to their magnetic properties. This characteristic is used to identify magnetic and non-magnetic materials in various contexts.
Test: Fun With Magnets - Question 9
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What happens to iron filings when a bar magnet is moved across them?
Detailed Solution for Test: Fun With Magnets - Question 9
Iron filings tend to stick more at the ends of a bar magnet when the magnet is moved across them. This is because the magnetic field is strongest at the poles of the magnet, which attracts more filings to these areas. An interesting fact is that this property helps in visualizing the magnetic field lines around a magnet.
Test: Fun With Magnets - Question 10
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Artificial magnets are made in different shapes such as __________, __________, and ____________.
Detailed Solution for Test: Fun With Magnets - Question 10
Artificial magnets are commonly made in shapes like cylindrical, bar, and horseshoe. These shapes are practical for various applications and help in focusing the magnetic field in different ways. For instance, bar magnets are often used in classrooms for demonstrations, while horseshoe magnets are useful in applications requiring a stronger and concentrated magnetic field.
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