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GK MCQs Section
Q. Consider the following materials:
  1. Steel
  2. Copper
  3. Aluminium
  4. Iron
Which of the above are commonly used in the manufacture of permanent magnets?
Answer: Only 1 and 4
Notes: Permanent magnets are made from ferromagnetic materials. Steel (an alloy containing iron) and pure iron are commonly used due to their strong magnetic properties. Copper and aluminium are non-magnetic materials and are not used for making permanent magnets. Thus, only statements 1 and 4 are correct.
Question Source: 📚This question has been sourced from GKToday's Target UPSC Prelims for 2026, 2027 & 2028 App Exclusive Course in GKToday Android Application which provides more than 12K Topicwise UPSC Prelims General Studies questions with explanations framed on UPSC pattern. Download the app here.
📌 Question Number: 111 in 91: Inorganic Chemistry in the above course in App.