Science · General Science
आडियो और वीडियो टेप पर आमतौर पर कौन सी लेप पाया जाता है?
- 1टिन
- 2सीसा
- 3एल्युमिनियम ऑक्साइड
- 4आयरन ऑक्साइड✓
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आयरन ऑक्साइड
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