Q. Oleum is chemically
A) H_{2}SO_{3}
B) H_{2}SO_{5}
C) H_{2}S _{2}O_{7}
D) H_{2}S _{2}O_{8}
Explanation
(c)
Oleum is chemically H_{2}S _{2}O_{7} (pyrosulphuric acid).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.