Electric Circuits
Addition of which of the following substance in electrolyte helps in producing bright finish?

 Glycerine.
 Dextrol.
 Phenol.
 Any of above.

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Electric Circuits
Pure metal generally have

  low conductivity and high temperature coefficient.
  high conductivity and large temperature coefficient.
  high conductivity and low temperature coefficient.
  low conductivity and zero temperature coefficient.

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