In which of these groups will all the substances be insoluble in water?
-
A.
Na2CO3, KNO3,(NH4)2C03 -
B.
NaHCO3, PbSO4, CaSO4 -
C.
K2C03, CaSO4, AgNO3 -
D.
PbCl2, NaCl, ZnCl2 -
E.
ZnCO3, BaSO4,AgCl
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