MCQ
Common alum is
- ✓${K_2}S{O_4}.A{l_2}{(S{O_4})_3}.24{H_2}O$
- B${K_2}S{O_4}.C{r_2}{(S{O_4})_3}.24{H_2}O$
- C${K_2}S{O_4}.F{e_2}{(S{O_4})_3}.24{H_2}O$
- D${(N{H_4})_2}S{O_4}.FeS{O_4}.6{H_2}O$
✓
Answer
Correct option: A.
${K_2}S{O_4}.A{l_2}{(S{O_4})_3}.24{H_2}O$
a
Potassium alum is the common alum of commerce whose chemical formula is
Potassium alum is the common alum of commerce whose chemical formula is
$K _2 SO _4 \cdot Al _2\left( SO _4\right)_3 \cdot 24 H _2 O$
Ammonium alum is $\left( NH _4\right) SO _4 \cdot Al _2\left( SO _4\right)_3 \cdot 24 H _2 O$.
Chrome alum is $K _2 SO _4 \cdot Cr _2\left( SO _4\right)_3 \cdot 24 H _2 O$
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