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How are the protective layer coatings on the parts are removed?

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in Advanced Machining by (962k points)
How are the protective layer coatings on the parts are removed?

(a) Use of chemicals

(b) Mechanical techniques with chemicals

(c) None of the mentioned

(d) All of the mentioned

This question was addressed to me in a national level competition.

This intriguing question originated from PCM-Process Description in division Chemical Processes of Advanced Machining

1 Answer

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Best answer
The correct option is (d) All of the mentioned

Explanation: The protective layers are removed by the use of chemicals and by using mechanical techniques with chemicals.

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