Answers

2016-02-01T07:43:53+05:30
An objectis magnetised by single magnet is called single touch method.
while,an object is magnetised by double magnets is called double touch method.

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2016-02-01T13:47:43+05:30
The method of making an artificial magnet by rubbing a permanent magnet over it, in the same direction, is known  single touch method whereas double touch method is a method of magnetizing a material by using two magnets instead of one.
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