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Q.

 LIST - 1 LIST - 2
A)PhosphoriteI)KNO3
B)Indian salt petreII)Ba(NO3)2
C)FluoroapatiteIII)NaNO3
D)Chile salt petreIV)3Ca3(PO4)2.CaF2
  V)Ca3(PO4)2
 (A)(B)(C)(D)
1)IIIIIIV
2)IIIVIIII
3)IVIIIVII
4)VIIVIII

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a

2

b

1

c

3

d

4

answer is D.

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Detailed Solution

  • sodium nitrate, NaNO3 (called Chile saltpetre) 
  • and potassium nitrate (Indian salt petre). It is found in the form of proteins in plants and animals.
  •  fluorapatite Ca9 (PO4 )6 . CaF2 )
  • Phosphorite  Ca3 (PO4 )2 .
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