Chemistry · Metallurgy
निम्नलिखित में से कौन-सी धातु व्यावसायिक रूप से उसके सल्फाइड के साथ उसके ऑक्साइड के स्व-अपचयन (auto-reduction) द्वारा प्राप्त की जाती है?
- 1Fe
- 2Al
- 3Zn
- 4Cu✓
सही उत्तर देखें
Cu
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