A) \[{{K}_{2}}S{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]
B) \[{{K}_{3}}[CO{{(N{{O}_{2}})}_{6}}]\]
C) \[{{K}_{2}}S{{O}_{4}}.C{{r}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]
D) \[KH{{F}_{2}}\]
Correct Answer: A
Solution :
The formula of Potash alum is \[{{K}_{2}}S{{O}_{4}}.\,\,A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]
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