Chemistry · d-Block Elements
लोहे को निम्नलिखित में से किस अम्ल के साथ उपचारित करने पर निष्क्रिय (passive) बना दिया जाता है?
- 1तनु HNO 3
- 2सांद्र HCl
- 3तनु H 2 SO 4
- 4सांद्र HNO 3✓
सही उत्तर देखें
सांद्र HNO 3
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