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ISRO Technician-B
Electroplater
ISRO Technician-B Electroplater 2017
35

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

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

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

36) Which method is used to measure the thickness of anodised film of aluminium

Ultrasonic

Magnetic

Eddy current

None

Answer is:

Eddy current

37) The following is not a "Personal Protective Equipment"

Desiccator

Apron

Respirator

Goggles

Answer is:

Desiccator

38) Which is a type of electro-deposition in which metal is deposited onto an electro conductive surface and is built up into a rigid structure and reproduced it, after getting the desired geometry.

Electro-winning

Electro-chemical machining

Electro-phoretic deposition

Electro-forming

Answer is:

Electro-forming

39) In Alkaline degreasing, the main reaction that helps to remove oil is

Coagulation

Neutralisation

Saponification

Double decomposition

Answer is:

Saponification

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

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