General Studies · Workshop Technology
निम्नलिखित में से कौन सा ग्राइंडिंग व्हील में उपयोग किया जाने वाला एक प्राकृतिक अपघर्षक (natural abrasive) है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1हीरा (Diamond)✓
- 2बोरॉन कार्बाइड (Boron carbide)
- 3एल्युमिनियम ऑक्साइड (Aluminium oxide)
- 4सिलिकॉन कार्बाइड (Silicon carbide)
सही उत्तर देखें
हीरा (Diamond)
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