एक सान चक (व्हील) का विनिर्देशन "50 C 46 H 5 E 18" है l इसमें अक्षर 'H' क्या सूचित करता है?

This question was previously asked in
ISRO VSSC Technician-B (Fitter) Official Paper (Held On: 14 July 2021)
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  1. ग्रेड 
  2. कण साइज 
  3. अपघर्षी प्रकार 
  4. सरंचना 

Answer (Detailed Solution Below)

Option 1 : ग्रेड 
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