A) \[FeS{{O}_{4}}\,.\,7{{H}_{2}}O\]
B) \[MgS{{O}_{4}}\,.\,7{{H}_{2}}O\]
C) \[ZnS{{O}_{4}}\,.\,7{{H}_{2}}O\]
D) \[CuS{{O}_{4}}\,.\,5{{H}_{2}}O\]
Correct Answer: A
Solution :
[a] \[FeS{{O}_{4}}\,.\,7{{H}_{2}}O\] is green vitriol [b] \[MgS{{O}_{4}}\,.\,7{{H}_{2}}O\] is epsom salt [c] \[ZnS{{O}_{4}}\,.\,7{{H}_{2}}O\] is white vitriol [d] \[CuS{{O}_{4}}\,.\,5{{H}_{2}}O\] is blue vitriol
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