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Question

Calgon is an industrial name given to____________.
  1. sodium meta-aluminate
  2. sodium hexametaphosphate
  3. hydrated sodium aluminium silicate
  4. normal sodium phosphate

A
sodium meta-aluminate
B
normal sodium phosphate
C
hydrated sodium aluminium silicate
D
sodium hexametaphosphate
Solution
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Calgon is an industrial name given to sodium hexametaphosphate. Its formula is Na2[Na4(PO3)6].

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