Q. Platinum, palladium and iridium are called noble metals because
A) Alfred nobel discovered them
B) They are found in native state
C) They are shining lustrous and pleasing to look at
D) They are inert towards many common reagents
Explanation
(d)
Platinum, palladium and iridium are not attacked by strong acids. So these are called noble metals.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.