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Nickel
why in news
New method - Hydrogen plasma method
global top
Indian state top
extraction is carbon intensive and polluting
NiO + Hydrogen plasma (instead of carbon) → Ni + H2O
Indonesia then russia
Odisha
AC
best AC temperature
health and less than 18 degrees
20 - 28 degrees
BP issues below 18 degrees
Copper
Isit used as cathode or anode
Is it critical mineral
cathode
Yes
Criticalminerals list