A) \[ZnC{{l}_{2}}\]
B) \[MgS{{O}_{4}}\,7{{H}_{2}}O\]
C) \[ZnS{{O}_{4}}\,7{{H}_{2}}O\]
D) [d] \[A{{l}_{2}}{{(S{{O}_{4}})}_{3}}\]
Correct Answer: C
Solution :
[a] \[ZnC{{l}_{2}}\]: Anhydrous \[ZnC{{l}_{2}}\] is used as Lewis acid to catalyse organic reactions. [b] \[MgS{{O}_{4}}.\,7{{H}_{2}}O\]: It is called as Epsom salt and is isomorphous with \[ZnS{{O}_{4}}\,.\,7{{H}_{2}}O\]. It is used as purgative in medicines. [c] \[ZnS{{O}_{4}}\,.\,7{{H}_{2}}O\]: It is commonly known as white vitriol. It is used to prepare lithopone\[(BaS{{O}_{4}}+ZnS)\], a white paint. It is also used in galvanisation of zinc.
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