Which of the following ore cannot be concentrated by electromagnetic separation?a)Chromiteb)Cupritec)Magnetited)PyrolusiteCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Understanding Electromagnetic Separation
Electromagnetic separation is a method used to concentrate ores based on their magnetic properties. This technique is effective for separating magnetic minerals from non-magnetic ones.
Types of Ores Mentioned
- Chromite:
- Chromite is the main ore for chromium and is magnetic in nature, making it suitable for electromagnetic separation.
- Cuprite:
- Cuprite (Cu2O) is a copper oxide mineral and is non-magnetic, which means it cannot be effectively concentrated using electromagnetic methods.
- Magnetite:
- Magnetite is a strongly magnetic iron ore and is excellent for concentration by electromagnetic separation.
- Pyrolusite:
- Pyrolusite (MnO2) is a manganese ore that is also magnetic, allowing it to be concentrated using this method.
Conclusion
The correct answer is option 'B' (Cuprite) because it is a non-magnetic mineral. In contrast, the other ores listed (Chromite, Magnetite, Pyrolusite) possess magnetic properties, thus making them suitable candidates for concentration through electromagnetic separation. Understanding the magnetic characteristics of minerals is crucial for selecting the appropriate separation techniques in mineral processing.

Answer

Electromagnetic separation is used to concentrate magnetic ores. From the following options, only cuprite is non-magnetic in nature so it cannot be concentrated by electromagnetic separation technique.

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