Q. Fuming sulphuric acid is

A) H_{2}SO_{4} + SO_{3}
B) H_{2}SO_{4} + SO_{2}
C) H_{2}SO_{4}
D) H_{2}SO_{4} + SO_{4}
Explanation

(a)
Oleum is fuming sulphuric acid.
H_{2} SO_{4}+SO_{3}⟶H_{2}S_{2}O_{7}
_{oleum or pyrosulphuric acid}

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.