{"id":87514,"date":"2025-06-01T06:45:49","date_gmt":"2025-06-01T06:45:49","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=87514"},"modified":"2025-06-01T06:45:49","modified_gmt":"2025-06-01T06:45:49","slug":"which-one-of-the-following-elements-is-used-in-pencil-lead","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-elements-is-used-in-pencil-lead\/","title":{"rendered":"Which one of the following elements is used in pencil-lead?"},"content":{"rendered":"

Which one of the following elements is used in pencil-lead?<\/p>\n

[amp_mcq option1=”Zinc” option2=”Lead” option3=”Carbon (Graphite)” option4=”Tin” correct=”option3″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC NDA-1 – 2017<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nThe element used in pencil-lead is Carbon in the form of graphite.
\n<\/section>\n
\nPencil ‘lead’ is not made of the metal lead. It is primarily composed of graphite, which is an allotrope of Carbon, mixed with clay.
\n<\/section>\n
\nGraphite is a soft, black, slippery solid that conducts electricity. Its layered structure allows it to leave marks on paper. The amount of clay mixed with graphite determines the hardness of the pencil lead.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following elements is used in pencil-lead? [amp_mcq option1=”Zinc” option2=”Lead” option3=”Carbon (Graphite)” option4=”Tin” correct=”option3″] This question was previously asked in UPSC NDA-1 – 2017 Download PDFAttempt Online The element used in pencil-lead is Carbon in the form of graphite. Pencil ‘lead’ is not made of the metal lead. It is primarily composed … <\/p>\n

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