Discussion
Assertion (A): Uniformity of green density matters as much as its average value.
Reason (R): Regions of differing density shrink by different amounts and the piece distorts.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the mechanism. Shrinkage depends on local porosity, so a compact denser at one end than the other shrinks unevenly and warps - and the internal stress may crack it. A uniform but slightly lower density is preferable to a higher average with a gradient through it.
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