A) Bleaching powder
B) \[{{K}_{4}}[Fe{{(CN)}_{6}}]\]
C) Hypo
D) Potash alum
Correct Answer: D
Solution :
Potash alum \[{{K}_{2}}S{{O}_{4}}.A{{l}_{2}}{{(S{{O}_{4}})}_{3}}.24{{H}_{2}}O\]
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