Question

In Alum : ${ K2SO4 . Al2(SO4)3. 24H2O}$ Which metal can replace Al

• A. Cr
• B. Mn
• C. In
• D. Sc

Answer 1

Answer: (A)

Cr

Answer 2

${K2SO4. Cr2(SO4)3 24H2O }$ chrome alum can form.