Home › MCQs › EEJ MAIN Chemistry › Question #7120
Back to Questions
EEJ MAIN Chemistry QUESTION #7120
Question 1
Which of the following ores is characterized by the presence of both iron ($Fe$) and copper ($Cu$)?
  • Copper pyrites✔️
  • Malachite
  • Dolomite
  • Azurite
Correct Answer Explanation
Copper pyrites, also known as Chalcopyrite, has the chemical formula $CuFeS_2$. This composition clearly shows it contains both copper and iron. Malachite and Azurite are copper carbonates, while Dolomite is a magnesium-calcium carbonate.