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For harder materials, which of the following etching rates are obtained?

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in Advanced Machining by (962k points)
For harder materials, which of the following etching rates are obtained?

(a) Very low

(b) Low

(c) Medium

(d) High

The question was posed to me in a national level competition.

Origin of the question is CHM in section Chemical Processes of Advanced Machining

1 Answer

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by (532k points)
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Best answer
Right answer is (d) High

For explanation: In Chemical milling, harder materials need higher etching rates.

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