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Which of the following, are the main uses of etchants applied in Chemical milling?

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in Advanced Machining by (962k points)
Which of the following, are the main uses of etchants applied in Chemical milling?

(a) Good surface finish

(b) Uniform material removal

(c) Control intergranular attack

(d) All of the mentioned

I got this question in an interview for job.

Query is from CHM topic in portion Chemical Processes of Advanced Machining

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Correct answer is (d) All of the mentioned

For explanation: In CHM, etchants are used for the above mentioned factors.

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