Which of the following gas exhibit magnetic property when cooled to liquid state?
Oxygen
Hydrogen
Helium
Nitrogen
Which of the following affect the magnetic property of a substance?
Altitude
Temperature
Colour
Humidity
Select the substance different from others
Copper
Iron
Aluminium
Silver
Which property of magnets is used for the construction of a magnetic compass?
Property of magnetic induction
Pair property of magnets
Directive property
Attractive property
The process by which a magnet loses its magnetic property is called
Degradation
Dehydration
Decomposition
Demagnetisation
Choose the correct statement
North and South Poles repel each other
South Pole attracts South Pole
North and South Poles in a magnet cannot be separated
Natural magnets are more powerful than artificial magnets
The points inside the magnet, where the attractive property is maximum are called
Edges
Magnetic centers
Optic centers
Poles
If same poles of two magnets are brought together,
They will attract each other
They will repel each other
They will lose their magnetic property
No notable observations
Select the correct option
Magnetic lines of force are curved lines
Magnetic lines of force do not intersect
Magnetic lines of force originate from North Pole and enter into South Pole
All the above are correct
The substance used to make electro-magnet is
Steel
Cobalt
Soft iron
Nickel
