RAS question
Rare earth elements are important because they are used in:
Correct answer: (A) Electronics, permanent magnets, defence equipment, and green energy technologies.
Rare earth elements are important because they are used in electronics, permanent magnets, defence equipment and green energy technologies.
Explanation
Rare earth elements matter because their highest-value uses sit in strategic and clean-technology supply chains, not in ordinary bulk materials. The 17 rare earth elements are linked to permanent magnets used in wind turbines and electric vehicles, electronics such as smartphones and LEDs, and defence systems such as guided missiles and jet engines. The Press Information Bureau, Government of India states that Rare Earth Permanent Magnets are among the most powerful magnets available and are essential in electric vehicles, renewable energy technologies, high-end electronics, aerospace equipment and defence systems. That is why option A is the only option broad enough to capture the actual importance of rare earths.
Why the other options are wrong
- (B) Textile manufacturing does not match the stated high-technology and strategic uses of rare earths in magnets, electronics, defence and green energy.
- (C) The word 'only' makes this wrong because rare earths are used across electric vehicles, renewable energy, electronics, aerospace and defence, not just nuclear reactors.
- (D) Cooking utensils only is far too narrow and unrelated to uses in powerful permanent magnets, high-end electronics, defence systems and clean-energy technologies.
Concept
This tests applied science and technology through critical minerals and their downstream uses. It recurs in RAS because rare earths connect resource security, industrial policy, defence preparedness and the green-energy transition.