[Solved] Which of the following are necessary for best surface quality in Chemical milling?

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Q.	Which of the following are necessary for best surface quality in Chemical milling?
A.	fine grain size and homogenous metallurgy
B.	coarse grain size and heterogeneous metallurgy
C.	fine grain size and heterogeneous metallurgy
D.	coarse grain size and homogenous metallurgy
Answer» A. fine grain size and homogenous metallurgy
Explanation: in chm, for best surface quality, fine grain size and homogenous metallurgical work piece must be required.

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