___________किसी धातु का यांत्रिक गुण है। 

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  1. वजन 
  2. ख़राब चालकता
  3. कठोरता 
  4. रंग 

Answer (Detailed Solution Below)

Option 3 : कठोरता 
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वर्णन:

धातुओं में अलग-अलग गुण होते हैं। अनुप्रयोग के प्रकार के आधार पर विभिन्न धातुओं का चयन किया जाता है। 

धातुओं का भौतिक गुण

  • रंग
  • वजन/विशिष्ट गुरुत्व
  • संरचना 
  • चालकता 
  • चुम्बकीय गुण
  • गलनीयता

यांत्रिक गुण 

  • तन्यता
  • आघातवर्धनीयता
  • कठोरता 
  • भंगुरता 
  • मजबूती 
  • दृढ़ता 
  • प्रत्यास्थता

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