Q. Common alum is
A) $K_{2}SO_{4} \bullet Al_{2}\left( SO_{4} \right)_{3} \bullet 24H_{2}O$
B) $\left( NH_{4} \right)_{2}SO_{4} \bullet FeSO_{4} \bullet 6H_{2}O$
C) $K_{2}SO_{4} \bullet Cr_{2}\left( SO_{4} \right)_{3} \bullet 24H_{2}O$
D) $K_{2}SO_{4} \bullet Fe_{2}\left( SO_{4} \right)_{3} \bullet 24H_{2}O$
Explanation
The correct answer is Option A: $K_{2}SO_{4} \bullet Al_{2}\left( SO_{4} \right)_{3} \bullet 24H_{2}O$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.