ISRO Technician-B Electroplater Question Paper - 2017 (Set - 1) with Answer Key

ISRO Technician-B Electroplater Question Paper - 2017 (Set - 1) with Answer Key

61) The 'Robber' or 'Thief' used in an electroplating bath is

Answer is:

An auxiliary cathode

62) For silver plating of all the external surfaces of a solid cylinder with 5 cm diameter and 12 cm length, the total current required is _____, if the current density applied is 2.5 Amp/dm2.

Answer is:

5.69 Amps.

63) Zincating is required for electroplating on

Answer is:

Aluminium

64) _____ of light is responsible for producing rainbows.

Answer is:

Refraction

65) Woods Nickel plating is employed as undercoat to plate on

Answer is:

Stainless steel

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