MCQ
An example of double salt is
  • A
    Bleaching powder
  • B
    ${K_4}[Fe{(CN)_6}]$
  • C
    Hypo
  • Potash alum

Answer

Correct option: D.
Potash alum
d
(d)Potash alum ${K_2}S{O_4}.A{l_2}{(S{O_4})_3}.24{H_2}O$

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