Home Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Mix Which of following is/are true for "calgon" ?
Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) Mix Single Correct MCQ
Published on: August 12, 2026

Which of following is/are true for "calgon" ?

A
It is obtained by heating of microcosmic salt, NaNH 4 HPO 4
B
It is a hexamer of cyclic meta phosphate
C
It binds calcium ion in the form of soluble complex
D
It can be prepared by heating NaH 2 PO 4 , H 2 O

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(a, b, c) Calgon is produced by heating microcosmic salt. The molten metaphosphate is rapidly cooled.

NaNH 4 HPO 4 ⎯→ NaPO 3 + NH 3 + H 2 O

It is a hexamer of cyclic metaphosphate of molecular formula (NaPO 3 ) 6

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