BioMedical Admissions Test (BMAT) 2025 – 400 Free Practice Questions to Pass the Exam

Calcium sulfate is indeed characterized as being poorly soluble in water, which aligns with its classification as insoluble. Generally, most sulfates are soluble, with notable exceptions such as those of lead, barium, and calcium. Calcium sulfate, while not completely insoluble, has limited solubility, confirming its classification in this context.

Sulfates such as those of lead (II) and barium are well-known for their low solubility, which is a critical aspect of their behavior in aqueous solutions. This culminates in the idea that even though many sulfates are soluble, calcium sulfate stands out due to this particular characteristic.

Other options incorrectly suggest universal solubility for sulfates or imply that all sulfates behave similarly in water, not taking into account the exceptions that exist in this category. Thus, the assertion regarding calcium sulfate’s solubility is consistent with established chemical principles regarding sulfate compounds.