An ore of manganese metal is: (a) bauxite (b) haematite (c) cuprite (d) pyrolusite
Answer :
(d) Pyrolusite Pyrolusite is an ore of manganese and the compound is manganese dioxide (MnO2).
An important ore of zinc metal is : (a) calamine (b) cuprite (c) pyrolusite (d) haematite
A common metal which is highly resistant to corrosion is: (a) iron (b) cuprite (c) pyrolusite (d) haematite
The metal which can be extracted from pyrolusite ore is: (a) mercury (b) manganese (c) calcination (d) sulphonation