Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Pyrolusite is an ore of Manganese, and it contains 
by mass 
inert impurities and the rest is water. When 
is ignited, it gets converted to 
. A sample of Pyrolusite was heated till constant weight is obtained. Calculate % of Mn in residue. [At. wt.: 
, 
]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Take 100 gm Pyrolusite 
POAC on Mn:
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
PHYSICS
SINGLE CORRECT MCQ
Statement- I: The binding energy per nucleon, for nuclei with atomic mas…
A coil of resistance is placed in a magnetic field. If the magnetic flux linked with the coil var…
A spherical ball A of mass 4 kg, moving along a straight line strikes another spherical ball B of m…
A thin wire of length L and uniform linear mass density ρ is bent into a circular loop with centre …
The diagram showing the variation of gravitational potential of earth with distance from the center…
Two thin dielectric slabs of dielectric constants and are inserted between plates of a parallel p…