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.

Burnishing

Peening

Cladding

Case hardening

Answer is:

Burnishing

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

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

Passivation

Buffering

Sealing

Tumbling

Answer is:

Sealing

33) Which is used as anode material in chromium plating

Chromium-Antimony

Tin-Antimony

Chromium-Lead

Lead-Antimony

Answer is:

Lead-Antimony

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

55 to 60 degree centigrade

"-15 to -20 degree centigrade"

0 to -5 degree centigrade

15 to 20 degree centigrade

Answer is:

0 to -5 degree centigrade

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

Sodium Hydroxide

Sodium Chloride

Copper Sulphate

Chromic acid

Answer is:

Sodium Hydroxide

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

For more MCQ's Click Here

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.

Burnishing

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

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

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

Sealing

33) Which is used as anode material in chromium plating

Lead-Antimony

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

0 to -5 degree centigrade

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

Sodium Hydroxide

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