Q. Taj Mahal marble is affected by
A) $SO_{2}$
B) $O_{2}$
C) $O_{3}$
D) $NO_{2}$
Explanation
$SO_{2}$ emitted from Mathura refinery (located about 40 km from Taj Mahal) as well as from foundries, power houses and railway yards get mixed with the atmospheric moisture and get converted into sulphuric acid, which settle down on the exterior of Taj Mahal. It reacts with marble ($CaCO_{3})$ leading to corrosion and discolouration of the monument.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.