A) \[MgS{{O}_{4}}.2{{H}_{2}}O\]
B) \[BaS{{O}_{4}}.2{{H}_{2}}O\]
C) \[CaS{{O}_{4}}.{{H}_{2}}O\]
D) \[MgS{{O}_{4}}.7{{H}_{2}}O\]
Correct Answer: D
Solution :
\[MgS{{O}_{4}}.7{{H}_{2}}O\]is known as Epsom salt. It is used as purgative in medicines for fire proofing of paper and cotton in dyeing and tanning processes. Hence, the correct option is [d].
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