C., used in power plants I think.
Answer:
Magnetic substances: steel tank, iron ball, nickel hinge
Non magnetic substances: wooden table, glass marbles, silver medal.
Explanation:
The substances which experience a force of attraction when placed in a magnetic field are called magnetic substances. For example, iron, cobalt and nickel.
The substances which do not experiences a force of attraction when placed in a magnetic field are called non magnetic substances. For example, wood, rubber, glass, etc.
This means that this substance has no fixed volume and can expand or shrink however it may want. An example is gas. Gas will always expand to fill up the space it is in.
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