Magnetism MCQ Class 8. We covered all the Magnetism MCQ Class 8 in this post for free so that you can practice well for the exam.
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MCQ on Magnetism for School Students
Every molecule of a magnetic substance behaves as a :
1. Tiny magnet
2. Elementary magnet
3. Molecular magnet
4. All of these
Option 4 – All of these
Molecular theory of magnetism is proposed by
1. Weber
2. Coulomb
3. Ewing
4. Oersted
Option 3 – Ewing
The limit of magnetisation of a substance is called :
1. Magnetisation
2. Magnetic saturation
3. Magnetic unsaturation
4. None of these
Option 2 – Magnetic saturation
The substance in which the parallel alignment of molecular magnets produced during magnetisation remains permanent, is
1. soft iron
2. steel
3. brass
4. copper
Option 2 – steel
Steel is used to make :
1. temporary magnets
2. electromagnets
3. permanent magnets
4. None of these
Option 3 – permanent magnets
The substance in which the alignment of molecules during magnetisation is disturbed easily, is :
1. soft iron
2. steel
3. brass
4. copper
Option 1 – soft iron
Soft- iron is used to make :
1. permanent magnet
2. electro magnet
3. temporary magnet
4. 2 and 3
Option 4 – 2 and 3
Two poles of a magnet have :
1. equal strength
2. unequal strength
3. strength of N- pole is twice that of S- pole
4. None of these
Option 1 – equal strength
A magnet is also called :
1. magnetic dipole
2. magnetic mono pole
3. magnetic tripole
4. None of these
Option 1 – magnetic dipole
Magnetism of a magnet can be destroyed by :
1. tapping
2. hammering
3. heating
4. all of these
Option 4 – all of these
The substances which are repelled by a strong magnet, are :
1. bismuth
2. copper
3. cobalt
4. 1 and 2
Option 4 – 1 and 2
The N and S poles of a magnet are the points in a magnet where :
1. N and S poles of the molecular magnets are left free
2. N and S poles of the molecular magnets are coupled
3. N and S poles of the molecular magnets are left uncoupled
4. 1 and 3
Option 4 – 1 and 3
The ability of a pole of a magnet to attract or repel another magnetic pole is called its :
1. Pole capacity
2. Pole strength
3. Pole force
4. All of these
Option 2 – Pole strength
The pole strengths of two poles of a magnet are
1. equal
2. unequal
3. pole strength of N is twice than that of S
4. None of these
Option 1 – equal
The Inverse Square law of Coulomb assumes
1. isolated magnetic poles
2. hypothetical isolated magnetic poles
3. both of these
4. none of these
Option 2 – hypothetical isolated magnetic poles
We covered all the magnetism MCQ class 8 above in this post for free so that you can practice well for the exam.
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