Q. The element evolving two different gases on reaction with conc. Sulphuric acid is
A) P
B) C
C) Hg
D) S
Explanation
(b)
Only carbon reacts with conc. H_{2}SO_{4} to give two different gases
C + 2H_{2}SO_{4} ⟶ CO_{2} + 2SO_{2} + 2H_{2}O
While other elements react with conc. H_{2}SO_{4} with the evolution of only one type of gas.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.