Discussion
Assertion (A): A very fine powder does not guarantee a dense sintered product.
Reason (R): Fine powders agglomerate strongly and can pack less uniformly than coarser ones.
Answer: A
Both are true and the reason gives the difficulty: sintering removes porosity between particles but not the large voids left between hard agglomerates, so dispersion matters as much as fineness does. Large voids between agglomerates are the hardest porosity to remove.
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