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

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

31) Which is a process by which the surface of a metal is made smooth and bright without appreciable metal removal, by rubbing it with a hard and polished tool.

Answer is:

Burnishing

32) Which process is followed for closing the pores in Anodized films

Answer is:

Sealing

33) Which is used as anode material in chromium plating

Answer is:

Lead-Antimony

34) The normal range of operating temperature of Hard Anodising process is

Answer is:

0 to -5 degree centigrade

35) The main etchant used for Chemical Milling of Aluminium alloys is

Answer is:

Sodium Hydroxide

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