Pencil Se Mark Kaise?
Science
Pencil se likhne par mark kaise aata hai? ✏️
Pencil ke andar graphite hota hai (ek soft carbon material). Jab tum likhte ho, graphite ka chhota sa layer paper par rub ho jata hai aur chipak jata ha...
Pencil Se Mark Kaise?
Science
Pencil se likhne par mark kaise aata hai? ✏️
Pencil ke andar graphite hota hai (ek soft carbon material). Jab tum likhte ho, graphite ka chhota sa layer paper par rub ho jata hai aur chipak jata ha...
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