Explanation:

About Rare earth metal
There are 17 elements found on the earth that are classified as rare earth elements (REE). These elements found all over our planet but typically in small amounts. The term "rare earth” comes from their initial discovery in which only tiny portions of these minerals could be isolated from larger quantities of still more common elements.
Today, "rare earth” is used to describe any of the 15 metallic chemical elements with atomic numbers from 57 to 71 (called "lanthanides”) and the chemically similar elements scandium and yttrium
? The pricey minerals are used in industries and sectors such as aerospace, automobiles, cameras, defence, entertainment systems, laptops, medical imaging, nuclear energy, and smartphones
? China is currently a leading global supplier for six out of the 12 mineral resources identified as critical for India by 2030.
? Though India is endowed with vast mineral resources — it is among the top five nations with reserves of rare-earth minerals — its potential is untappedcurrent affairs
For instance, minerals and metals such as bismuth, cadmium, gallium, germanium, indium, molybdenum, rhenium, selenium and tin are generally recovered as a by-product during processing of primary ores (lead, zinc, copper, molybdenum and aluminum). Rare earths are a group of 17 minerals necessary for making everything from nuclear reactors to flat-screen televisions, and, China currently controls 94 per cent of their global supply.