Q. In the laboratory H_{2}S gas is prepared by using black lumps and dil. H_{2}SO_{4}. The black lumps are
A) FeSO_{4}
B) MnO_{2}
C) FeS
D) FeSO_{3}
Explanation
(c)
In laboratory ,H_{2}S is prepared by treating ferrous sulphide(black lumps) with dil .H_{2}SO_{4}
FeS+ H_{2}SO_{4}⟶FeSO_{4}+H_{2}S
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.