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Meaning : Used as a lubricant and as a moderator in nuclear reactors.
Synonyms : graphite, plumbago
कार्बन का एक प्रतिरूप जिसे ब्लैक लेड भी कहते हैं।
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Black lead ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Black lead ka matlab kya hota hai?