Class VIII

Examples of magnets includes
  1. Magnalock
  2. door-stopper
  3. fridge door
  4. all of them
A substance consisting of a coil of wire with an iron core and is only magnetized when an electric current flows through it is called
  1. magnet
  2. electromagnet
  3. battery
  4. coil
Element which easily get magnetized and demagnetized is
  1. iron
  2. steel
  3. copper
  4. silver
Rock of material which attract is termed as
  1. magnet
  2. magnetite
  3. magnesia
  4. magnetic
A rock which attracted iron materials was found by
  1. Greeks
  2. Trojans
  3. Egyptians
  4. Italians
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